1.Part No.30127T5118DR 2.Bit Diameter: 127mm 3.Button Bits: 18 buttons 4.Length of drill rod: 1525mm-6100mm (MM and MF) 5.Button bit design: Drop centre, Retrac body. 6.Tungsten carbide (Buttons): Spherical, Ballistic and Conical. 7.Applications: Bench, Production. 8.We have different designs for various rock formations, longer service life to decrease use costs for users.