Features of combination cam Lock 1.Durable & Reliable & Sturdy 2.Keyless, very Convenient.you can Set or change your own personal code at any time. 3.Consisting of 3-bit cipher wheels. 4.ideal Replacement of any similar size keyed cam lock Specification: Cutting hole size is 19mm,the lock cylinder length is 20mm,suitable for cupboard thickness from 1mm up to 14mm. Easy to Set Your Own Code 1.the Initial password is 000. 2.Find the resetting hole on the lock side,press the set button with a paperclip.then Set your own password to a new one and keep your personal code in mind. 3.Reminding:the password can be converted to non-resettable by rotate the cylinder with 180 degree.Providing higer security. Package: 3 sets combination cam locks packed in one package. 100% Satisfaction Guarantee Puyueo is committed to providing 100% Satisfaction Guaranteed after sale services. Customer satisfaction is our first priority, if you have any question,or you are not satisfied with our products, pls feel free to contact us on Amazon message,we will reply you at the soonest possible.