Hongwuhuan G15 red air picks for rockare mainly used for crushing operation of reinforced concrete buildings, cement, permafrost, icy layers, soft ores, soft rocks, road constructions.We have five models of pneumatic picks: G10, G11, G15, G16 and G20, of which G11 and G16 are anti-freezing air picks. Air Pick series Technical Parameters ModelParameters Unit G10&G11 G15&G16 G20 Whole weight kg 10.4 12.5 20 Whole length mm 570 600 550 Stroke mm 155 185 200 Working pressure MPa 0.40.63 0.40.63 0.63 Air consumption L/S 26 27 28 Impact frequencey Hz 16.5 17.5 16 Tube diameter mm 16 16 19 Spec.pick poker bar mm 2470 2470 3087 Certificates.