... , SPT testing Mini Crawler Drilling Rig.Suitabble for diamond core drilling, carbide core drilling, SPT test drilling, small water well drilling, hydro ... diameter 75, 91,110,130,150 mm2) Drilling depth: 150,100,70,50,30 m2. Rod Dia. 42 mm3. Drilling Angle ... Diesel Engine 12.1 kw/2000 rpm mini crawler drilling machine for soil testing, SPT testing