Double deadbolt door lock (HL102-SS) 1. Function:SC/DC. 2. Door Thickness:35-45mm. 3. Backset:60mm,70mm. 4. material: brass or stainless steel. 5. Latch:1"(25.4mm),Zinc Alloy Die Cast Bolt with Hardened Steel Pin. 6. Key System: Kwikset,Yale System, 5 Pins Cylinder Available 7. Packing:Box Pack / Visual Pack.