Acroprint 125/150 Key REPLACEMENT KEY FOR ALL ACROPRINT 125 150 200 MODELS Original Acroprint Time Clock Key (PK626) (single key) Fits all 125, 150, and 200 series clocks (including AR3, NR4, QR4, RR4, etc...) Also fits new style (plastic case) E series time stamps (including ETC, ET, etc...) Acroprint part number 45-0150-003