secure deadbolt lock

Detailed Product Description: model No. 101SS deadbolt lock 1.materialiron, stainless steel2.backsetadjustable 2-3/8" or 2-3/4"(60mm or 70mm).3.plate75mm,70mm,65mm4.door thickness1-3/8" to 2-1/8" (35mm to 55mm)5.keysiron,brass;commom, computer6.usageentrance, privacy, passage,hotel, and so on7.cylinderbrass cylinder(C),zinc housing(H);brass C, plastic H;Introduction *Deadbolt is an economical, durable auxiliary lock which provides the security of a 1"(25mm)throw zinc die case deadbolt with a hardened steel roller insert. *It can be keyed to pair with entrance bored lock to maximize security on exterior doors. Construction: * Exposed trim is either stainless steel or brass or steel. * Free turning cylinder trim prevents wrenching. Deadbolt: * Full one inch throw zinc die cast deadbolt with hardened steel roller insert to resist sawing. Function: *Single Cylinder Deadbolt with inside thumb-turn. Deadbolt projected or retracted by use or key outside or inside thumb-turn. *Double Cylinder Deadbolt, deadbolt projected or retracted by key on either side. *Keyless deadbolt operated by thumb-turn inside only