Edelrid HMS Bulletproof Screw FG – robust HMS biner for belaying

Edelrid HMS Bulletproof Screw FG – robust HMS biner for belaying

The HMS Bulletproof Screw FG is an innovative, heavy‑duty HMS carabiner built for reliable belaying and long service life. It uses a steel insert at the apex and an internal spring bar to reduce wear and help keep the biner from twisting—two details that make everyday belaying simpler and safer.

The biner is offered in screwgate or Triple Lock versions, with an H‑profile body that uses material efficiently to stay as light as possible. A clean Keylock closure keeps clipping and unclipping smooth, and the spring bar helps hold the carabiner in place during belaying to avoid cross‑loading. Practical, durable, and designed to pair well with Edelrid belay devices.

Why we like it at arrampica!

• Very robust design aimed at real‑world belaying, not just lowest weight
• Steel insert and anti‑twist bar improve durability where rope or hardware rubs most
  
• Thoughtful shape and construction for long‑term use with modern belay setups

Key Features

• Screw gate model
• H‑profile construction for efficient material use and minimal weight
• Keylock closure for optimal handling when clipping and unclipping
• Internal spring bar to hold carabiner in place and reduce risk of cross‑loading when belaying
• Steel insert at the apex to prevent premature wear from rope friction or bolt hangers

Technical Details

arrampica! tip

Use this biner as your primary belay carabiner with modern belay devices, especially when you want something tougher than typical lightweight models.

The steel insert and anti‑twist design help it run longer with less wear, so it’s ideal for frequent use on crag days, multi‑pitch routes, or guiding sessions.