ISC Offset D Supersafe Carabiner

The ISC Offset D Supersafe carabiner combines an offset D shape with ISC's auto-locking Supersafe gate. The offset D keeps the load near the spine while opening wide enough to clip rope eyes, rings and devices.

Why choose an offset D

An offset D puts the load close to the spine, which is the strongest part of a carabiner, while the wider gate end makes clipping a thick eye splice or a pulley side plate easier. That makes it a good all-rounder for hitch climbing systems, lanyard ends and connecting to a bridge.

Look at how the gate sits on your saddle when you build your system. An offset D clipped to a bridge or lanyard ring should hang with the gate facing out and away from bark, so it does not get pushed open against a stem. Set it up on the ground, hang in it, and check the orientation before you leave the ground.

The Supersafe gate is designed so it cannot be opened by a single accidental motion. See other auto-locking carabiners if you prefer an oval or HMS shape.

Daily checks

Make sure the gate closes fully and the lock engages without help. Look for cracks, deep rope grooves and corrosion, especially if you work near salt air or treated wood.

Treat it as life-support gear: follow the manufacturer's instructions, check it before every climb, and retire it after a hard fall, a drop onto a hard surface, or any damage you can't explain. Use it within an ANSI Z133 program and only after proper training.