Micrometer torque wrench 3/8 square drive, which complies with international standard ISO 6789 and U.S. standard ASME B107.300, is a hot sale product from Shanghai UB Machinery, which was established jointly by Erying Yue and Mr.Jan Stasiek who is a member of American Society of Mechanical Engineers as well as a former chairman of Hand Tool's Institute's Torque Wrench Standards Committee.Feature and Advantage● GM Model: Reversible Ratchet head for clockwise and counter-clockwise operations and can be operated with 8 degree swing in small spaces.● All steel construction, superb durability.● Permanently stamped major and minor scales for precision torque values setting.● Minor scale is 1/10 of increment of main scale.● Convenient Metric or English major scale with English or Metric secondary scale.● +/-4% Accuracy in clockwise direction from 20% to 100% Max. Torque.● Pull/push to unlock/lock the locking ring to setting torque.?● Grooved non-slip grip fits comfortably in your hand.SpecificationMetricItem No.Square DriveTorque RangeIncrementLengthWidthWeightN.mLb.ftN.mmmmmkgGM1121/4"2.5-1220-105*0.05290380.68GM1201/4"4.0-2030-180*0.1290380.68GM2303/8"6.0-3050-250*0.1318380.82GM3301/2"6.0-3050-250*0.1318380.82GM2603/8"10-609-450.5388380.96GM3601/2"10-609-450.5388380.96GM21003/8"20-10015-750.5443381.04GM31001/2"20-10015-750.5443381.04GM21253/8"25-12520-900.5443381.04GM31251/2"25-12520-900.5443381.04GM32001/2"40-20030-1501468401.16GM33351/2"65-33550-2501528401.3GM43353/4"65-33550-2501528401.34GM45003/4"100-50080-4002.5855605GM48003/4"160-800120-60041055605.9GM58001"160-800120-60041055605.9GM410003/4"200-1000150-75051055605.9GM510001"200-1000150-75051055605.9GM515001"300-1500200-110051260759.2GM520001"400-2000300-1500101260759.2GM530001"600-3000400-20001512607510.5GM3200L1/2"40-20030-1501525401.29GM3335L1/2"65-33550-2501700402.1GM4335L3/4"65-33550-2501700402.15GM51500L1"300-1500200-1100516007513GM52000L1"400-2000300-15001016007513GM53000L1"600-3000400-20001518407515.2GM4400S3/4"80-40060-3002710573GM4500S3/4"100-50080-4002.5710573*Unit is Lb.in; L is extended length version; S is ? shorten length version.ApplicationMicrometer torque wrench 3/8 square drive is suitable for various industries like construction, automotive and other industrial environments.Service12-month warrantyFAQ1, What is your standard?Complies with U.S. standard ASME B107.300?and International standard ISO 6789.2, What is the shipping cost？Shipping costs will be calculated based on order total.2, Do you provide OEM service for micrometer torque wrench 3/8 square drive ?We prefer to promote our Novatork Brand, but we do OEM as well.