JET®, JT9-505801, Needle Scaler, Tool/Kit: Bare Tool, Series: R8 Series, 3 mm Diameter Needle, 4600 bpm Blows per Minute, 1-1/8 in Stroke Length, 3 cfm Air Flow, 90 psi Air, 1/4 in Air Inlet, 3/8 in Minimum Hose, 16-3/8 in OAL Folded Dimensions