Check the listing for details. Keyless Door Lock Mechanical Push Button Digital Keypad Entry Security Door Knob. Color: Silver, Condition: New. Listed at 55.99 USD. Product Description SpecificationMaximum borehole diameter 2-1/8"BOTH 2-3/8"(60mm) & 2- 3/4"(70mm)Backsets/Latches 50.60 single tongue lock bodyDimensions:195x62mm(Full Size),Wood or metal, plastic door thickness within 35-50mmElemake Keyless Entry Mechanical Door Lock with HandleSafe, Durable, Hand-held, HumanizedThe lock will stay unlocked until the handle is lifted up. once unlocked you can come and go as needed without having to re-enter the codeThe lock provides keyless security, the combination can be 4-8 digitsThe lock has a lever handle on the outside as well as inside No batteries required.100% Stainless Steel 304 mechanical door lock Does not lock automatically (this is a pro or a con depending on your need) Only for single boredoor, need to drill additional 4 holes for the fasteners Easy to install, with installation instructions or website.