Details
Keyless Entry Door Lock - Door Locks with Keypads, Deadbolt Lock Keypad Door Knob, Stainless Steel (Pass Code or Key) 100% Mechanical, No Electronic Gray

Silver deadbolt lock, Mechanical (no risk of low battery), Stainless Steel deadbolt lock is extra hard (304), you can use passcode or key to lock it, or both, very difficult to pry open.Made of stainless steel #304, enhanced anti-corrosion surface treatment , features 5-15 times higher than zinc material.
Suitable for standard prepared doors, maximum borehole diameter 2-1/8" (Suitable for wood or metal door thickness of 35-50mm/1.38-1.96inch), works both left/right handed and inward/outward opening doors. Slight adjustment to door knob cutout may be needed to accommodate width of lock(Borehole can not less than 1-15/16"). For double bores standard door, this lock must install on the above bore.
Does not lock automatically, you don’t need to enter pass code again and again. (This can be a pro or con depending on your needs). Suitable for standard prepared doors, maximum borehole diameter 2-1/8" (Suitable for wood or metal door thickness of 35-50mm/1.38-1.96inch), works both left/right handed and inward/outward opening doors.
Design for DIY installation. Combination can be 4-8 digits (no repeats) with tumblers providing over 8,000 options. Please refer to the installation video. Please be noted that the combination code can be used in any order.
Wear-free keypad material, no clues left for thieves, higher security. Does not lock automatically (This can be a pro or con depending on your needs). Please note that the lock comes set with the current default code is 159260 not 123678 as listed in the user manual！