About this item ?【Value and Practical Set】Come with 52PCS die grinder kit, including 50PCS brown aluminium oxide roll lock discs 2 inch: 36(10pcs)/60(10pcs)/80(10pcs)/120(10pcs)/240(10pcs), and 2PCS purple easy strip discs. Suitable for a wide range of surfaces from coarse to fine and meet the requirement of 25000 Max. rpm. ?【Higer Efficiency Sanding Discs】TSOAPX roll lock sanding disc are made of premium calcined aluminium material, tough and well adapted to grinding high tensile materials, such as carbon steel, alloy steels, tough bronze and hard woods. Alumina outperforms all other coated abrasives where toughness (resistance to fracture) is the primary consideration. ?【Top Performace Easy Strip Discs】Open web construction. The thick, strong synthetic fibers and extra coarse silicon carbide grain make light work of removing rust, weld splatter, scale and other surface contaminants. Can be used in sequence with roll lock disc to blend and impart a good finish in one or two operations. ?【Sturdy and Tough Backing】Processing with advanced equipment and strict production control, cloth backings are more durable than paper, offer greater resistance to tearing, and tolerate continual bending and flexing during use. Make sure that the coatings and parts on our discs will not fall off during use, deform or cause defects on the discs surface for better smooth and efficient work. ?【Quick Change to Save Time】The tool fastening system allows 2 inch sanding discs to maximize productivity and minimize downtime. They can be used on contours as well as flat surfaces in general purpose and specialised grinding. Ideal for weld blending, light deburring and finishing,aggressive stock removal,cleaning and corrosion removal.