... shank size:2 7/8'' 3)sealing:metallic seal 4)processing:forging 5)MOQ:1pc Fitting1)6 1/2'' ... ,etc.List of Size BitsHejian baoxing Petroleum Machinery Co., Ltd.ProductSizeIADC CODE TCI Tricone Bit3 7/8 ,5 1/2 ... 2,8 3/410 5/8,12 1/413 3/4, 17 1/2,22, 24,26417 427 437517 ... 217 315 316 317 325 327PDC BIT(3 blades,4 blades,5 blades,6 blades)5 1/2, 6 ... 2,8 3/410 5/8,12 1/413 3/4, 17 1/2,22, 24,26M223,M322,M316, ...