... appearance,Small Size,High reliability, Good Wearability,Long life. 1/2" Air Drill(Profssinoal Quality) Major product description:Speed/minutes ... : 700RPMDrill chuck diameter:1/2"(10mm)Drill chuck screwed joint:3/8"-24UNF ... pressure: 90 Psi 6.3 kg/cm2Inlet: 1/4 NPTLength: 200mm Weight:1.0kg Novel appearance,Small Size,High reliability,Good Wearability ...