STEIN KALVERA ACR-24 11.7mm Climbing Line - Pink and Purple - Hand Spliced by RIGIQ UK

The STEIN KALVERA ACR-24 is an 11.7mm high-performance climbing line in a distinctive pink and purple colourway, built for UK arborists and tree surgeons running both DRT/MRS and SRT/SRS climbing systems. Manufactured with a 24-strand polyester over-braid and a braided nylon core, the KALVERA delivers a supple, responsive handling feel with excellent grip across the full range of traditional friction hitches and modern mechanical climbing devices including ZigZag, Chicane, Akimbo and Hitch Climber setups. Its lightweight ACR-24 construction offers greater freedom of movement in the canopy compared with heavier 12mm-plus traditional lines, without sacrificing durability or abrasion resistance.

Each KALVERA climbing line is hand spliced in the UK by the RIGIQ Splicing Division — part of the STEIN group — ensuring a professionally finished, fully traceable termination with quality-controlled splices that are rated as an integral part of the certified assembly. The line is fitted with scannable NFC tracking for digital identification, inspection records and traceability throughout its service life, and carries serial numbered terminations for full batch traceability. Certified to CE EN 1891 Type A — the European standard for low-stretch kernmantle ropes for work positioning. Available in 25m, 35m, 45m and 60m with a spliced eye termination from Gustharts, with UK stock ready to ship.

⚠ Before publishing: insert confirmed MBS (kN) and weight per metre (g/m) from the STEIN/RIGIQ technical data sheet. These fields are placeholders.

Key Features

• 11.7mm diameter — lightweight compact profile offering greater freedom of movement than traditional larger-diameter climbing lines
• Pink and purple colourway — visually distinctive in the canopy for quick identification when running multiple lines or working in teams
• 24-strand polyester over-braid — supple, easy-grip feel with excellent knot-holding, high abrasion resistance and controlled extension under load
• Braided nylon core — provides strength, controlled stretch and responsive handling across varying load conditions
• Optimised for modern mechanical devices — compatible with mechanical friction devices including rope-based SRS systems as well as traditional friction hitches in DRT/MRS systems
• Hand spliced by RIGIQ UK — each termination is professionally finished by the RIGIQ Splicing Division with full traceability and quality control
• Serial numbered terminations — full batch traceability across the product's working life
• Scannable NFC tracking — embedded NFC chip supports digital product identification, inspection records and service life documentation
• Protective coating — applied to the cover to resist contamination and support longevity in demanding arborist environments
• CE EN 1891 Type A certified — meets the European standard for low-stretch ropes used in work positioning and restraint
• Spliceable construction — fully spliceable for custom terminations by qualified riggers

Understanding CE EN 1891 Type A

EN 1891 is the European standard for low-stretch kernmantle ropes used in work positioning, restraint and fall-arrest systems. It defines requirements for construction, strength, elongation, sheath slip and knotability that ropes must pass before they can be certified for use in professional PPE applications.

Type A is the higher of the two classifications within EN 1891. Type A ropes must achieve a minimum breaking strength of 22kN at the termination, an elongation of no more than 5% at 10% of the breaking force, and must pass more stringent sheath performance requirements than Type B ropes. For arborist climbing applications — where the rope is subjected to sustained dynamic loading, friction device interaction and abrasion throughout a working day — Type A is the correct specification. The KALVERA ACR-24 is certified to EN 1891 Type A, confirming it meets these requirements for professional climbing use in both DRT/MRS and SRT/SRS systems.

KALVERA ACR-24 vs ACR-16 - Choosing the Right Construction for Your Climbing Style

STEIN produces climbing lines in two core construction families. Choosing between them depends on your climbing technique, preferred devices and handling preference.

The KALVERA ACR-24 is the better choice for climbers using modern mechanical ascent and descent devices who want a lighter, more responsive line across both DRT and SRT techniques. If you run a traditional hitch-based DRT system and prefer the firmer feel of a 16-strand line, the STEIN ACR-16 range may suit your style better. Not sure which construction works with your specific devices? Contact Gustharts and we can advise based on your setup.

RIGIQ UK Splicing and NFC Tracking

RIGIQ Splicing Division is a specialist rope finishing division within the STEIN group. Each KALVERA climbing line sold with a spliced eye termination is hand spliced in the UK by RIGIQ technicians, ensuring a consistently finished, rated termination with full quality control and batch traceability. The spliced eye is designed as an integral part of the certified assembly — not an aftermarket addition — and is included within the scope of the rope's EN 1891 Type A certification.

Each line is fitted with a scannable NFC chip within the splice area. Scanning the chip with a compatible device provides digital access to product identification data, including batch reference, splice records and inspection fields. This supports the inspection and documentation requirements of formal equipment management systems and helps fulfil ongoing duty-of-care obligations for professional operators managing climbing equipment on behalf of employees or contractors.

Important Use Guidance

This is a life-safety product. The KALVERA ACR-24 is a certified climbing line for use in work positioning and arborist climbing systems. It must only be used by trained and competent arborists in conjunction with a fully configured and compatible climbing system. Do not use this rope beyond its rated service life or outside the parameters of its EN 1891 Type A certification.

Inspect before every use. Check the full length of the rope and both terminations for cuts, abrasion, sheath damage, core protrusion, discolouration, stiffness and any signs of chemical contamination. Any rope showing damage or degradation must be withdrawn from service immediately.

Follow STEIN's rope care guidelines. A copy of the rope care guidelines should be supplied with the product and is also available from STEIN. Failure to follow the care guidelines may compromise the rope's integrity and could create a life-threatening situation.

Retire if subjected to a significant load event. A rope that has been subjected to a fall, shock load or any event that may have compromised its structure must be retired from climbing use, regardless of apparent visual condition.

Use NFC tracking for inspection records. Record each pre-use inspection in the rope's NFC digital record. This supports best-practice PPE management for professional operators and aids compliance with equipment inspection requirements.

Also Known As

The STEIN KALVERA ACR-24 is also referred to as a climbing line, arborist climbing rope, tree climbing rope, work positioning rope, SRT climbing line, DRT climbing line and kernmantle climbing rope. In professional arborist contexts it may also be called a spliced climbing line, NFC rope or RIGIQ spliced rope. The distinctive pink and purple colourway makes the KALVERA visually identifiable in the canopy — useful for teams managing multiple lines during complex rigging operations. For ordering, reference STEIN KALVERA ACR-24 and specify the required length (25m, 35m, 45m or 60m).

Pairs Well With

• Climbing Harnesses — compatible with all major arborist harness systems including Petzl SEQUOIA and SEQUOIA SRT
• Mechanical Climbing Devices — including ZigZag, Chicane and Akimbo systems compatible with 11.7mm rope
• Work Positioning Lanyards — ZILLON and MICROFLIP lanyards for canopy positioning
• Rigging Equipment — complete your system with friction savers, carabiners and rigging plates

Explore More

• Climbing Equipment
• Climbing Harnesses
• Rigging & Lowering Equipment

FAQs

What is the STEIN KALVERA ACR-24?

The KALVERA ACR-24 is an 11.7mm arborist climbing line from STEIN, manufactured with a 24-strand polyester over-braid and braided nylon core. It is hand spliced by the RIGIQ UK Splicing Division and certified to CE EN 1891 Type A. Available in a distinctive pink and purple colourway.

Is the KALVERA suitable for both DRT and SRT climbing?

Yes. The KALVERA ACR-24 is compatible with both DRT/MRS and SRT/SRS climbing systems, and performs well with both traditional friction hitches and modern mechanical friction devices.

What does CE EN 1891 Type A mean for a climbing rope?

EN 1891 Type A is the European standard for low-stretch kernmantle ropes in work positioning applications. Type A requires a minimum breaking strength of 22kN at terminations and elongation of no more than 5% at 10% of the breaking force. It is the appropriate specification for professional arborist climbing use.

What is the RIGIQ Splicing Division?

RIGIQ is the specialist rope finishing division within the STEIN group. Each spliced KALVERA climbing line is hand spliced in the UK by RIGIQ technicians, providing a quality-controlled, fully traceable eye termination included within the scope of the rope's EN 1891 Type A certification.

What lengths is the KALVERA available in?

Available in 25m, 35m, 45m and 60m with a spliced eye termination. Select the length appropriate for your typical tree height and climbing technique.

What is the NFC tracking used for?

The embedded NFC chip provides digital product identification, inspection records and service life traceability. Scanning with a compatible device allows inspection data to be recorded against the specific rope, supporting PPE management obligations for professional operators.

How do I care for the KALVERA climbing line?

Follow STEIN's rope care guidelines supplied with the product. Keep the rope clean, dry and away from chemicals, sharp edges and UV exposure when not in use. Inspect before every use and retire the rope immediately if any damage, degradation or abnormality is identified.

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