YT29 Portable Pneumatic Hand Held Air Leg Rock Drilling Machine for Hard Rock YT29A Rock Drill Complete Specifications Table (Copyable Markdown) Table Specification Item Weight 27 - - kg Dimensions 659248205 - - mm Cylinder Bore 82 - - mm Piston Stroke 60 - - mm Operating Air Pressure 0.4–0.63 - -MPa Operating Water Pressure 0.3 - - MPa Operating Temperature -30–45 - - °C Air Hose Inner Diameter 25 - - mm Water Hose Inner Diameter 13 - - mm Drill Shank Dimensions H22×108 - - mm Suitable Drill Hole Diameter 34–45 - - mm Suitable Drill Hole Depth ≤5 - - m