Easily Removes Wiper Arms. This handy universal tool makes easy work of the sometimes frustrating task of removing windscreen wiper arms from the taper. Simply slide under the arm and screw the knob to release. Suitable for spline taper and tapered spigots. This product is for the removal of stubborn wiper arms. Features screw thread and hook feet, and is sized for difficult access. A time saver for any workshop or DIY enthusiast.