FIRSTINFO F3451A 10 pcs Metric 12 Point Box End Torque Adapter Extension Set, 3/8 inch Drive Chrome Vanadium Steel Construction EVA Foam Tray + Carrying Case

[For Torque Calculations] Use with a torque wrench. The adapter features a center-to-center length design to assist with torque calculations when additional length is applied. 【Specification】Length range: 65mm to 70mm- 3/8” Drive, 10 pcs metric set includes 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm; 12-point box end allows for fine indexing, helping to improve speed and access. Fits 4, 6 and 12 point fasteners. 【Easy to Reach】Box end thin profile wall thickness is specially engineered to provide strength while still allowing ample room for access to reach difficult fasteners. 【No Damage】Designed with features radius edges which will avoid scratch and other damages. Larger sizes feature thicker construction for strength. Work with your torque wrench or even a breaker bar to correctly torque fasteners located in hard-to-reach places.