General description The Monument 170N Stiffnuts Kit is specifically designed for the efficient removal of stiff backnuts from awkwardly placed taps, making tap installation a quicker and easier process. This tool is compatible with 1/2-inch BSP and 3/4-inch BSP taps. Technical specifications Tool type: Stiffnuts removal tool Compatible with: 1/2-inch BSP and 3/4-inch BSP taps Ideal for: Monument stiffnuts 27 mm and 32 mm Includes: 3/8-inch cordless drill adaptor Usage Designed for one-handed operation Utilizes the mechanical advantage of the tap tail thread to remove stiff nuts Other information Includes full user instruction manual