Patented Spherical Cone Design: Expands effective polishing surface to safely reach deep, curved, and hard-to-access areas with smoother transitions and consistent results Safe Polishing on Wheels & Curved Surfaces: Integrated wheel guard helps protect edges and spokes while reducing “grabbing” on sharp contours and intricate designs Drill-Powered for Fast, Professional Results: Attaches to any standard drill to deliver powerful polishing performance with less effort and time