Standard Pack = 1 piece(s). Air Inlet Size = 1/4 NPT ; Air Pressure PSIG = 90 (6.2) ; Collet/Chuck Size = 3/32 IN ; Exhaust Type = Rear ; Free Speed RPM = 100000 ; Height = 1 1/2 IN (37 mm) ; Hose Inside Diameter Sice = 1/4 IN (6 mm) ; Length = 5 5/16 IN (135 mm) ; Maximum Air Flow CFM/SCFM = 1/6 IN (170 mm) ; Type = Air Powered Pencil Grinder ; Weight = 0.84 lbs (0.38 kg) ;