Products Products Yale Door Lock-sets Deadbolts Standard Duty Deadbolts 8121 - Yale 8100 Series Standard Duty Deadbolt (Double Cylinder Deadbolt) 8121 - Yale 8100 Series Standard Duty Deadbolt (Double Cylinder Deadbolt) 8121 8121 Standard: ANSI / BHMA A156.5.2001 Testing Cycles: Tested up to 100,000 cycles Materials:- Chassis: Steel- Latch and Bolt: Zinc- Cylinder Housing: Steel- Round Plate: Brass Backset: 60mm / 70mm Door Thickness: 35~50mm Function: Residential applications. Anti-Sawing Insert: Hardened Steel Cylinder: Solid Brass 5-pin tumbler cylinder No. of Keys: 3pcs of nickel plated brass key Finishes: Polished Brass (US3), Antique Brass (US5), Antique Copper (US11), Satin Stainless Steel (US32D) Other similar products 8111 - Yale 8100 Series Standard Duty Deadbolt (Single Cylinder with Thumb turn) 8101 - Yale 8100 Series Standard Duty Deadbolt (One side Deadbolt)8100 deadbolt series is an economical durable deadbolt, i…