The versatile Sea to Summit 20mm Accessory Strap with Hook Release has a quick release buckle that is made from anodized 7075 aluminum. It is 3/4" 20mm and 80"/2M.Features: Quick hook release buckle Lash dry bags onto a deck of a sea kayak or raft Use to attach gear to your pack, touring bike, roof rack... Buckle made from zinc plated steel 20mm-3/4 straps rated to 220 lbs See also the Accessory Straps with Buckle 2 Pack Specs: Size Variation: 2M/80" Length: 80"/2m Width: 3/4"-20mm