GTSP Cordloc Coyote Brown The spring-loaded button features ridges for better grip, and a wedge-shaped closure that prevents slippage. Elliptical barrel housing includes a drain hole to prevent moisture build-up and sewable side slots sized for Type 2A parachute cord. Cordlocs are great for use with shock cord, bank line, bootlaces, and parachute cord sizes up to Type 3 (550). Made from impact-resistant plastic, GTSP Cordlocs are durable, weather-resistant products that make cinching drawstrings and Attachenators easy.