Attaches to drawstrings and tightens without the use of knots. The single barrel cord lock consists of 3 parts, a barrel, a toggle (plunger) and a spring. When squeezed together the tension is released and the cord lock can move freely up and down. When released the tension is engaged and the cord lock will keep drawstrings in place. The large single barrel cord lock is great for making paracord bracelets, accessories and for use with clothing with drawstrings. Dimensions: 7mm x 33.7mm x 16mm.