Type Y19A combined hand and air legged rock drill Weight 19kg Overall length 600 mm Operating air pressure 0.4£0.5 *** I***ct energy ¡Ý28J Air-pipe bore(inner Dia.) 19 mm Water-pipe bore(inner Dia.) 13 mm Air consumption ¡Ü43L/S Drill rod trailer 22 x 108 mm Type FT100 air leg(optional) Leg length 1312mm Propulsion stroke 810 mm Weight 11kg Cylinder 52mm