skg435

1)6 1/2''2012 Hot oil rig drill bit 2)pin shank size:3 1/2'' 3)sealing:metallic seal 4)processing:forging 5)MOQ:1pc Fitting1)6 1/2''2012 Hot oil rig drill bit 2) tungsten carbide3)Medium hard with high compressive strength and hard stringers,such as hard sandy mudstone , and sandstone ,etc.List of Size BitsHejian baoxing Petroleum Machinery Co., Ltd.ProductSizeIADC CODE TCI Tricone Bit3 7/8 ,5 1/ ...