... Brand new MOQ:1 piece API 8 1/2" 5 Blades New PDC Bits for Oilfield Well ... Drilling1-API or ISO 9001:2008 2-Delivery Date: In 7 days3-Delivery term: ... Packing: Wooden CaseWe can supply rock bits,kingdream bit,smith bit,tricone bits, diamond bits,PDC bits,TCI ... , marble, metamorphic schist (For hard, low abrasive formations)2. Gneiss, Diorite, Basalt (For hard and abrasive formations) ...