3/4″ Dr. Heavy Duty, Black, 1-1/2″ Accutorq K-tool ACC203920 475 Ft. Lbs. The most accurate automotive and commercial truck torque socket in the world AccuTorq features: Patented strobe marks stop turningat precisely the correct torque every time Manufactured with Swedish spring steel Solid one-piece construction Deep-well sockets for those specialapplications where regular socket depth isjust not enough Packed in convenient molded plasticcarrying case Includes color-coded user guide ISO 9001 certified Why Choose AccuTorq? Swedish spring steel AccuTorq is manufactured with only the best raw materials, including specially heat-treated Swedish spring steel. It is the most accurate torque socket in the world. Patented Strobe Marks Patented AccuTorq strobe marks stop turning at precisely the correct torque every time. There is no guess work and no recalibration. Solid One-Piece Construction AccuTorqs solid one-piece construction eliminates the wide torque variances unavoidable with socket extensions and adaptors. Deep Well Sockets AccuTorqs deep well sockets allow for special applications where regular socket depth is just not enough. Lifetime Guarantee By adhering to ISO 9001 quality standards and ultrasonically inspecting each torque socket, we are able to provide a lifetime guarantee for each AccuTorq product. AccuTorq is sold in sets or individually