Single Cylinder with Thumb Turn 8111 Series

Deadbolt & Combination Set buying Guide 1. Quality The deadbolt installation enhances hight security for door. Users should use high quality for safety use. 2. Finish The deadbolt finishing should be matched to knobset or lever handle  3. Pin Number ​ Pin Number allows deadbolt and knobset / lever to be operated by the same key : key alike system 4. Anti-Sawing Protection   ​ Quality deadbolt shall have hight material grade bolt with harden steel roller pin to resist sawing. While bolt is sawed, the harden steel pin will be rolling and protects bolt fo an-tisawing.