The Accessory Straps with Hook Release are, as the name suggests, a versatile accessory strap with a quick release lightweight anodized aluminum alloy hook buckle. A few handy uses include strapping gear to roof racks, lashing dry bags together and attaching gear to your backpack. Available in two widths (10mm and 20mm) and three lengths (1 m / 40 in, 1.5 m / 60 in, and 2 m / 80 in). Sea To Summit Accessory Strap 10mm Hooked 1m Features: Quick hook release buckle Buckle made from anodized aircraft grade aluminum alloy Use to attach gear to your pack, touring bike, roof rack and more Lash dry bags together or onto a deck