... stocks,fast delivery 5.IADC 527 8 3/4" IADC 527 Kingdream drill bits for rocks HAS series for oil well 1. ... are in stock to meet your special need. 3.Sizes and types of drill bits we can privide: 60mm,65mm,76mm,93mm ... ”),215.9mm(8 1/2”),222.2mm8 3/4”) 241.3(9 1/2”),244.4(9 5/8”),250.8(9 7/ ... T, L/C at sight, western unionProducts show 8 3/4" IADC 527 Kingdream drill bits for rocks HAS series for oil well