❶Tight Connection Roloc Design: Quick change discs, unique safety torque spiral allows to replace disc quickly, just twist it to remove or connect. When sanding disc is working, thread direction of disc is opposite to the force of friction, which makes the connection between disc and tray/holder more and more tight, ensures steady working even in high speed.

❷ High Performance Sanding Discs: Black Sanding Discs, with honeycomb structure is suitable for stainless steel, aluminum, non-ferrous metals, plastics, fiber products, ceramics, stone, solid wood furniture, concrete surfaces, etc. When working, grinding particle removes target coating, while tiny fiber polishes the scratch, leaving a glossy surface, a great coating removal disc, perfect for coating/rust/dirt removal.

❸ Superior Zirconium Oxide Discs: Strong cutting force and long-life service, generally used to polish hard metal, such as titanium alloy, . Suitable for rust removal and polishing, works well on rugged surface

❹ Aluminium Oxide Discs : Combine quality aluminium oxide sandpaper and strong R-lock shank base, making quick work of general grinding, deburring, welds/paints/oxidation layer removal, prep condition all types of surfaces.

❺ Package Including: 49 Pcs sanding discs with 1 Pcs holder( 1/4'' shank)! Details of discs: 3x Black Sanding Discs, 15x Quick Change Discs (5 Pcs of each Coarse, Medium, Fine), 20x Aluminium Oxide Discs(5 Pcs of each 60Grit, 80Grit, 180Grit, 240Grit), 10xZirconium oxide Discs (5pcs of each 80Grit, 120Grit), 1 pcs Wool Discs .