... SD, XL,and MACH shank 3. button and bit face is on your request All of our down the ... hole drill bit is made of 100% vergin raw material with good ... CIR, DHD, COP, MISSION, QL, SD, XL,and MACH2) bit diameter: from 76mm to 305mm is all available3) air pressure ... type: low and high air pressure are both available4) bit face design:5) button shape design:If you are ...