Detailed Product Description 1>. Rock Chisel Bits Dia.: 32mm,34mm,36mm,38mm,40mm,42mm,44mm,46mm2>.Tapered Degree: 6degree,7degree,12degree3>. Carbide Type: YG9C, YG11C, YK15, YK15.6, YK20, YK25.6 Besides,we also could manufacture the various rock chisel bits as your detailed requests.