Aluminum Double Locking Snap Hook

This aluminum snap hook has a double locking gate: you press the keeper and then open the gate, so it cannot be opened by a single push. Lighter than steel, it suits lanyard ends and positioning setups where weight adds up over a day.

Why a double locking snap

A double locking snap closes and locks automatically, and opening it takes two deliberate actions. That makes it hard for a branch, rope or D-ring to open it by accident, which is why snaps like this are common on lanyards and positioning gear.

Aluminum cuts weight compared with steel, which you notice at the end of a long day on spurs.

Snap hooks also hold their orientation better than a carabiner on a sewn or spliced lanyard end. They are less likely to twist and cross-load against a D-ring when you lean back on a stem, which matters when you are on spurs and working with both hands.

Wear and inspection

Aluminum wears faster than steel where it rubs against steel hardware or wire core lanyards. Check for grooves, sharp edges, a sticky keeper and a gate that does not snap shut. Make sure the snap is compatible with the D-rings on your saddle. Life-support gear has to meet the applicable standard and the manufacturer's instructions, get inspected before every climb, and be used only by trained climbers.

Compare with the steel locking rope snap.

If you use the snap with a wire core flipline, keep an eye on where the wire rubs. Aluminum grooves faster under steel, and a sharp groove can damage rope or slings that run through it later.