The DEWALT Power Tool Lanyard features auto-locking, swiveling carabiners on both ends to tether tools up to 15lbs. (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.