1. It's constructed to work perfectly with most camera bags and neck straps.2. It's strong, swivels smoothly, and locks to the safety of your camera and your piece of mind.3. The hook will slide your camera smoothly up the strap for that legendary Rapid speed.4. The hook connecting quick sling strap and camera bag.5. 1/4inch Screw connecting adapter F camera/camcorder shoulder quick sling strapHook Length: 60mmHook Attachment : Locks to strapcolor:Photo colorMaterial:MetalPackage Contents:1 x Shoulder Strap Screw1 x Metal Connecting HookOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.