The DEWALT® power tool lanyard features double-action, swiveling aluminum carabiners on both ends to tether tools up to 15 lbs. (6.8 kg). The large carabiners are designed to easily connect to lanyard-ready power tools on one end and anchorage points such as beams and rails on the Other. Once connected it becomes a key component to a tethering system intended to prevent accidental drops that can lead to injuries and property damage