Industrial SP1001 Bevel Gear Offset Screwdriver Skewdriver is the original bevel-gear offset driver that lets you fasten screws in tight spots with a 105-degree offset head. It features a bevel-gear drive with a removable handle and a 1/4" ANSI bit holder for common screwdriver bits. The tool is specified for a maximum torque of about 11 Nm and a maximum speed of up to 600 rpm when used with a drill. The SP1001 is marketed as the SkewDriver by Spec Tools/SkewDriver Products, with list pricing around $85.00.
