The spark reflectors are large glass discs that protect the user when working. It has four rubber feet that provide stability and a free from float ball bared spindle. It has a low vibration design to increase productivity. It comes with 1 rough and 1 fine grinding wheel. Specification: Input Power: 150 Watt. No Load Speed: 2,950/Min. Wheel: 150 x 16 x 12.7mm Bore. Weight: 5.28kg.