... reputations for providing quality products and best service. 2.Specifications about our productsAbout the tricone bit tricone bit ... Type Available Size: 6",6 1/2",7 1/2",8 1/2",9 1/2",9 5/8",9 7/8 ... /8",6",6 1/2",7 1/2",7 7/8",8 1/2",9 1/2",9 5/8",9 ... decibels. Main Type Available Size: 8 1/2",9 1/2",9 5/8",9 7/8",10 5 ... ModelTCI BIT, STEEL TOOTH BIT IADC CODE 116 117 126 127 136 137 216 217 226 316 317 326 ...