Please understand that these are used items. These are hooks and attachments for picture rails from Arakawa Grip. The wire diameter is likely φ1.0-1.5. There are two types of hooks: one type that is adjusted by loosening a part, and another type that is adjusted by pressing and loosening a stopper. Wires of varying lengths can also be included. Wires are not included if sold separately. 1 set is 1500 yen. A set of metal hooks and fittings, perfect for interior decoration. - Quantity: 21 sets - Design: Metal hooks and fittings Thank you for looking.