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Edelrid HMS Bulletproof Screw

The Edelrid HMS Bulletproof Screw is an innovative, robust HMS carabiner with a steel insert at the top part of the rope basket to prevent wear and sharp edges.

Also making a lighter, durable alternative to a steel carabiner for top-roping, the Edelrid HMS Bulletproof Screw is made from mostly of aluminium, with the exception of a steel reinforcement element. Lightweight yet providing protection at the point that is most susceptible to abrasion, the HMS Bulletproof Screw solves one of the greatest problems experienced by sports climbers: edge wear.


  • H-profile construction ensures best possible use of material and minimal weight
  • Keylock closure for optimal handling when clipping/unclipping
  • Steel insert in lower carabiner prevents premature wear due to rope friction


  • Gate Opening: 24mm
  • Gate Closed kN: 25
  • Gate Open kN: 9
  • Keylock: Yes
  • Minor Axis kN: 9 
  • Widest width mm: 89
  • Length mm: 110
  • Material: Alloy
  • Weight: 82g

Personal Shopping - By Appointment

Would you like to try on some climbing shoes or mountain boots for size before you make your purchase? If so, then why not book an appointment with us today! We can offer you a bespoke one-on-one shopping experience with one of our experienced staff members.

Customer Reviews

Based on 2 reviews
Rick N.

I needed quick 11 year "steel" anniversary gift and it's really the only kind of thing she likes!

Alistair M.
enduring locking carabiner

I don't think anyone these days makes bad gear. As you would expect from a company like Edelrid this is a well-made bit of kit that handles well. I particularly like the stainless steel re-inforced surface to eliminate wear from the rope. I expect this to last a lifetime.