UPGRADE CONNECTOR - Unlike the traditional sticky disc that may fall off causing the grinder speed should not be too fast. & WEAR- - It is made of high quality and resin which features fast grinding, good flexibility, and wear-resistance. It polish surfaces to their glossiest without causing damage. This disc takes one-piece nylon bayonet. It comes with a screw design that you can tighten directly. The design is safe and stable. LONG-LASTING PERFORMANCE - you can get the quickly and efficiently without having to worry about needing to replace the disc too often. Wet and dry polishing is available by this disc. WIDE RANGE OF STONE PROJECTS - They are perfect for all solid materials such as , Concrete, Marble, Stone, Tiles, glass etc. Ideal for counter-tops, tabletops, and splash-backs, and any other job for residential, industrial floors., Weight: 1.52559885304 pounds, Manufacturer: Aisuoka