Looking for a perfect solution for mailboxes, cabinets, gym lockers, drawers, or equipment? 4-dial mailbox combination cam lock offers 10,000 possible combinations, and a higher security, and black finish. The mailbox combination lock replaces any standard cam lock with 10,000 possible combinations that can be easily reset within seconds. use for keyless mailbox combination locks is healthcare, education, gyms, schools lockers, anywhere needing multiple person access. Features - Color: Black and white. - Material: Platic and steel. - Size: 5.80 x 5.80 x 4.90 cm/ 2.28 x 2.28 x 1.93 inch. - Locks steel construction and hardened steel shackles for added strength and safety. - Two ways to use and hardened steel long service life durable, non-corrosive anti-smashing anti-scratch waterproof. - Anti-corrosion anti-rust anti-freeze modulation switch for a wide range of uses. - Key reload lock - easy to set 4-digit dialing and easy to remember. - for tool boxes, cabinets, drawers, mail box, school lockers or any where keys are not suitable.