> The Yale Entrance Cylindrical Knobset, Carolina, 5120 Series in Satin Stainless Steel has ANSI/BHMA security features. 
> It is guaranteed for 175,000 cycles as tested. 
> The knob, strike and rose are made of stainless steel and brass while the latch and bolt are made of zinc. 
> The chassis of knobset is made of steel. 
> Used for the entrance, it features a solid brass 5-pin tumbler cylinder and comes with 3 pieces of nickel plated brass keys