Item No.:K288-18central lock with brass computer key, master key andremoval key. Material:Zinc alloy Finish:nickel-plated Cylinder:D18mmxL24mm Package: one piece ina poly bag,one dozens in a medium box, 120pcs in one carton. Meas:54x46x12.5 cm N.W.:18 KGS G.W.:19.5 KGS