impact resistance API three cone bit

Hejian New Field Petroleum Machinery Co., Ltdmainly operates tricone bits, three die steel teeth drill bits, three disc set teeth drill bits, diamond drill bits, PDC bits composite piece, roller bits, drill stems, catch all, crabs, lift subs, lifting hooks, stationary rings, centralizers, drilling accessories, etc. You can customize the bits of different layers, calibers, and alien drills. 
Our products meet API standard and the bit of international general type with IADC (the international association of drilling contractors) coding standards. 
Our products are used in oil field, gas field, mine, well, geologic prospecting, geothermy developing, hydrological detection, project piling, etc. guaranteeing quality and considerate service. 
The principle of our company is based on the quality of survival. With advanced technology and scientific management, our company develops with reputations for providing quality products and best service. 
After years of production, business development and technical innovation, our company has established a professional team including technical support and after-sales. The complete varieties, high quality, reasonable price and saving cost for you, big inventory, and rapid delivery are our characteristics. Welcome new and old customers to visit and discuss cooperation!

MILL TOOTH ROLLER BIT

1. Pics of 15 1/2' IADC 111 Mill Tooth Roller Bit

2.  Size