Secure a tarp, build a bear cache or attach gear to a bike, boat or cart. Designed to lock securely into place with a simple pull of a cord, the CamJam is an easy, knot-free way to tighten, tension, and secure lighter loads of all kinds. Anchor the carabiner to any hook, D-ring, or loop, feed a cord through the cam until you've reached the desired level of tension, pull firmly, and the cam locks into place and stays that way until you release it by rotating the cam. Easy to adjust and readjust. Made of durable, cast aluminum. Carabiner clip with a stainless steel gate on one end, rotating, ridged cam mechanism on the other. 2 attachment methods: loop system and fixed end. Load limit is 227kg. Breaking strength is 680kg. Fits rope sizes: 2 to 9.5mm. Dimensions are 9.8 x 4.7 x 2.3cm Not for climbing or other uses where disengagement could cause injury or damage.