1)360 degree sprial hammers 2)total weight:3.8t-5.2t ... -1.2m 5)size:6.2*1.96*3.2 360 degree sprial hammers total weightkg3800-5200powerhp32,46,50,60,70drilling ... .3600work pressureMPa20max travel speedkm/h45electricityv380 30-50kwsizem6.2x1.96x3.2m 360 degree Spiral hammers(11m depth and 0.2m-1.2 ...