The Cal-Van Tools 10mm Subaru Hex Bit Socket, No. 7541, is designed to make it safer and easier to remove and install cam sprocket bolts on Subaru engines, 2002 to present. The 7541 eliminates methods, like impact bits, that can lead to damage or injury. The bit offers a secure and stable fit, and can be used with 1" wrench, socket, or even impact tools when extra force is required.