10 Mm Wrench | MSCDirect- 10mm ignition wrench size ,89140. In Stock. 10mm 3/8" Drive Full Polish Chrome Crowfoot Wrench Style Crowfoot Wrench System of Measurement Metric Drive Size (Inch) 3/8 Size (mm) 10 Finish/Coating Full Polish Chrome Warranty Mfr's Limited Lifetime Warranty PSC Code 5120. In Stock.676-10 Lang 10mm Serrated But Wrench676-10 Lang 10mm Serrated But Wrench description summary: Lang 10mm Serrated But Wrench. Use to install and remove 12-point (triple-square) metric socket-head screws. Turn with a socket or wrench. 10MM, Hex size is 1/2 Quantity discounts may be available for the 676-10 Lang 10mm Serrated But Wrench.