1-API or ISO 9001 2- IADC(115-437) 3- High quality & competitive price 4- All model & dimension available 5-High speed ... ,GA435,GAT515G8 3/8212.7GA21410 5/8269.9GA114,GA12412304.8GA124,GA13412 1/4311.2GA114,GA115,GA124,GA214,GAT215G17 1/2444.5GA114,GA125,GA134 ... ,GA214,GA215,GA415,GA435,GA515G, GA525Y, GA535G, GA545GY, GA625GY7 5/8 more information ...