Air Locker AP700 Heavy Duty Professional Air Punch Nailer / Nail Remover / Nail Puller. 1/4 Inch NPT Thread Air Inlet. 80-120 PSI Pneumatic Nailer Removes 10-20 Gauge Nails , Black | 80-120 PSI Operating Range | Pneumatic Power | 1/4-In NPT Air Inlet | Heavy-Duty Construction | 10-20 Gauge Nail Capacity