... bits,kingdream bit,smith bit,tricone bits, diamond bits,PDC bits,TCI tricone bits, steel tooth bits, milled ... from 3-1/8” to 17”.There are different PDC (polycrystalline diamond compact) grades and shapes applied for rock ... ,437,517,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction, geothermal, ... work days API 8-1/2" New PDC Bits/PDC Cutter/Diamond Bit