Double Locking Snap Hook

A double locking snap hook is the classic connector on the end of a flipline or lanyard. The keeper must be pushed open in two separate motions, which helps stop the gate from rolling open against a D-ring or limb.

Where a snap hook belongs

Snaps have been the go-to connector on fliplines for generations because they are quick to clip one-handed with gloves on. You will see them on lanyard ends, on rope-and-snap climbing setups, and on positioning lanyards in bucket trucks.

The double locking keeper needs two motions to open, so the gate cannot easily be pushed open by a D-ring or a branch. Compare other snap hooks if you need a specific gate size or material.

Snaps are also common on ground-crew positioning lanyards and on rope-and-snap lanyards for bucket work, where quick clipping matters more than low weight.

Use and inspection

Clip only to compatible D-rings and connectors so the snap cannot roll and load against its keeper. Do not clip a snap around a limb or back onto its own line unless it is designed for that.

Before each use, check that the keeper springs closed and locks on its own, and look for cracks, wear, corrosion, and bent parts. Retire it if it fails any check. Treat it as life-support equipment: it must meet ANSI Z133 and the manufacturer's instructions, be inspected before every climb, and be used only by trained climbers.

Store snaps dry and keep grit out of the keeper spring, which is what usually fails first.