Weslock 00640ININSL23 Impresa Knob, Satin Nickel Cylindrical Door Locks,Meets ANSI A 156.2 Grade II lock standards Weslock 5-Pin cylinder Panic proof privacy/keyed entry - one turn of interior knob/lever unlocks and opens door Limited lifetime mechanical & Limited lifetime finish warranty NOTE:Premiere Essentials is a series within Weslock