... . With API and ISO9001 2 High quality and competitive price 3 Size: 8 1/2inches, 9 1/2inches, 12 1/4inches or according to ... drill bits, PDC bits, bit size ranges from 81/2" to 121/2". All the products have been awards the ISO9001 certificate ... ininin²inL/SrpmKN6M332641/229.43 1/214--2560--4008--458 1/2M332661/23164 1/225--3860--30020—10012 1/4M332661/2436.96 5/825 ...