Using Bosch Carbide Technology, grits of the hardest metal are robustly fixed to the surface. Can be cleaned with a solvent, allowing the sharp grit to remain fully effective over its long lifespan. Starlock mount for maximum power transfer and convenient blade change within 3 seconds. Ideal for removal of old paint prior to finer-grain sanding. Stiff plates are also ideal for removing edges and bumps from wood. Designed for multiple materials and users.