Small size & Light weight Powerful impacting energy & Low reverse impacting Low noise & high reliability & durable working TypeBK20sBK28sWeight(kg)2129Output flow (lpm)26-3426-34Operating pressure (bar)105-140105-140Impacting frequency (bpm)1800-24001800-2400Bits size (in. Hex)1x4-1/41-1/4x6Model of handleAnti-vibration handleAnti-vibration handle