The small combination locks are made of zinc alloy. Strong, precise, safe and durable. 3-digit combination furniture cabinet digital lock. The lock uses a 3-digit combination. 3-wheel combination original dial set to 0-0-0. No screw needed, easy to install. Multi-coded lock options for use in different cabinet thicknesses. Ideal for tool boxes, cabinets, drawers, mailboxes, school subjects, etc. Specification: Condition: brand new Material: Zinc alloy Barrier diameter: approx. 31.6mm / 1.24inch Extend the spring bolt size: Approx. 49 x 17 mm / 1,93 x 0,67 inch Style (optional): 1 # coded lock for the thickness 0.5 ~ 9mm sheet iron cabinet 2 # coded lock for thickness 12 ~ 16mm wood wardrobe 3 # coded lock for thickness 17 ~ 23mm wood wardrobe 4 # 49mm Extend spring bolt Package weight: 10 ~ 110g 1 # / 2 # / 3 # Package included: 1 x Cabinet Coded Lock 4 # Package included: 1 x 49mm Extend spring bolt Note: If your cupboard is thicker, please purchase the extra extension pin for replacement so it will fit in your cupboard. Features The small combination locks are made of zinc alloy. Strong, precise, safe and durable. 3-digit combination furniture cabinet digital lock. The lock uses a 3-digit combination. 3-wheel combination original dial set to 0-0-0. No screw needed, easy to install. Multi-coded lock options for use in different cabinet thicknesses. Ideal for tool boxes, cabinets, drawers, mailboxes, school subjects, etc.