RockSteel, Twistlock


Super-strong D

The rockSteel offers a surprising strength-to-weight ratio in a carabiner of its capacity. Most steel carabiners are made from 1/2 diameter steel. We use a lighter, 7/16 diameter steel that is heat treated for added strength. Like the Rock Exotica aluminum carabiners, the Rocksteel frames are CNC machined for precise fittings and exact tolerances. The result is a carabiner with a high strength-to-weight ratio, keylock snag-resistant nose and a feel like no other steel carabiner in the world. The gate/sleeve is rated at 16kN or 3600 lbs, to protect against inward force against gate.

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Item Description

The rockSteel carabiner is ANSI Z359.12 (09) and NFPA G compliant.


  • MBS: 50 kN (11,240 lbf)
  • Gate Opening: 30mm (1.2″)
  • Dimensions: 125 x 75mm (4.9″ x 2.95″)
  • Weight: 246 gm (8.8 oz.)
  • Certification: ANSI Z359, NFPA ‘G’


This product can expose you to chemicals including nickel acetate which is known to the State of California to cause cancer.

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Additional information

Weight .4 lbs
Dimensions 3 × 3 × 2 in

Silver, Black