FEATURES-1/2" drive 1 3/8" jumbo crowfoot wrench for your ODIN Works .308 KeyMod Forend installation-Use to torque the barrel nut to 40-50 ft. lbs.-NOT compatible with the ODIN Works AR15 KeyMod Forend barrel nutPRODUCT SPECIFICATIONS:Dimension 0.80 X 3.15 X 4.15Height 0.8000Width 3.1500Length 4.1500TYPE/COLOR CROWFOOTSIZE/FINISH 1-3/8"MATERIAL STEELAR-15 ACCESSORY YOTHER FEATURES: ODIN USES 1-3/8" BARREL NUTS ON THEIR 308 BARREL NUTSNO DIRECT SHIP TO CALIFORNIA