Main Functions:Lens Cap Keeper/Lens Cap Leash/Connects the lens cap to the lens and prevents loss of the lens cap when removing it! It has a retractable leather strap on one end that can be tied over a camera or lens. The other end is a round plastic with strong adhesive, mainly through the strong adhesive on top of the lens cap. Prevent frequent removal of the lens cap lens cap lost. Versatile, no matter perforated/non-perforated lens cap just stick it on and you can use it easily. Quantity: 5pcs/per box. Colour: black. Specification: Length: 190-230mm/7.48-9.05 inches, Leather band length: 65mm-80mm/2.56-3.15 inches (use with lens size: diameter 40mm-83mm/1.57-3.26 inches, or tie it directly on top of the camera). ,Paste round diameter: 15mm/0.59 inches.