Close bags securely without tying. A spring-loaded cord lock made of polypropylene with an ABS steel spring. Ideal for use with leech line and shock cord. Squeeze together, tension is released and cord lock can move freely up and down cord. Release, tension engaged and cord lock stays in place. Excellent holding power on softer cords. Marginally effective on Shockloc® cord which is very hard and slippery. 

Specifically engineered to be highly rust and corrosion-resistant in order to withstand the extreme conditions of saltwater and marine environments.

Use for single line up to 1/4", and for doubled lines up to 1/8". Most uses require a doubled line to run through the lock.