S. Parker single and double cylinder tubular deadbolts are available in various keying combinations, some with 2 3/8" to 2 3/4"adjustable backsets. Available finishes are polished and antique brass, and stainless steel, depending on the model selected. All deadbolts have a solid brass bolt, with a hardened steel core that rotates to make hacksawing almost impossible. Bolt throws are a full 1". Many models have six pin tumblers, keyed to five pins. Single cylinder deadbolts have a thumbturn on the inside. With a 6-way bolt, the 81130 single cylinder deadbolt uses an "A" Keyblank, and comes in polished brass, the 81131 in antique brass and the 81132 stainless steel. The deadbolt is clamshell packed. The 81230 6-way bolt double cylinder deadbolt is available in polished brass, antique brass and dull chrome. A key is needed on both sides. The deadbolt is clamshell packed. The dead-bolt latch is Stainless Steel and 6 way. The 91100 series single cylinder deadbolt uses a pin tumbler with a KW-1 keyway, has an adjustable backset, and comes with all screws and installation instructions. It is clamshell packed in polished brass, stainless steel and antique brass. The single cylinder deadbolt 92160 series has a 2 3/4" backset, and uses an 1145 SC-1 keyway. Using a six pin tumbler keyed to five pins, it has a latch face plate that is 1 1/8" x 2 1/4". It uses Keyblank V, and comes keyed alike if desired. It is available in 92160PB polished brass and 92160SS stainless steel.