... Size: 3 7/8"--17" API&ISO9001:2008 Brand new MOQ:1 piece API 8 1/2" 5 Blades New ... and shapes applied for rock formations as follows:1. Andesite, marble, metamorphic schist (For hard, ... TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction, geothermal, directional boring ... MOQ 1 Piece Supply Ability 1000 Pieces/month Delivery Time within 7 work days API New PDC ...