PREMIUM QUALITY: These discs, made of silicon carbide grains (46#), superior grinding performance for efficient grinding and long-lasting durability, meeting the needs of both DIY enthusiasts and professionals. OPTIMAL SIZE: Designed with a diameter of 4inch (100mm), a bore of 5/8inch (16mm), and a thickness of 9/16inch (14mm), This size is designed to fit 4 inch angle grinders perfectly. EFFICIENT TREATMENT:Strip Discs easy sanding of smooth and rough material surfaces, minimizing damage to the substrate. Their consistent performance makes them an indispensable tool for a variety of projects. COLORFUL : Elevate your work with our Grinding Disc Set featuring 4 black, 4 , 2 green, and 2 blue discs. Diversify your treatments with ease. VERSATILE APPLICATIONS: Paint rust remover does can be used on a wide range of metals, wood, and plastics to effectively remove rust, dirt, paint, weld spatter, scale, oxides, and other contaminants. They are suitable for a variety of DIY and professional tasks., Weight: 1.88164540617 Pounds, Manufacturer: Reeatel