Functions and purposes: filing cabinets, meter boxes, tool cabinets, locks, and other purposes.Easily can be removed and installed this one.It will lock all the drawers.One set: High-quality Lock and two Lock keys.Lock Size: 15mm (Diameter), 10mm (Length)Main Material: Zinc Alloy. Finish: bright chrome, bright nickel.Package included:20 x lock40 x keysOnly the above package content, other products are not included.Note: Light 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.