Economical and Practical Set: This 2 inch sanding discs set comes with 2 pieces 1/4 inch backing pads, 15 pieces non-woven discs (coarse/medium/fine), 64 pieces aluminum oxide discs (40/60/80/120/180/240), 15 pieces zirconium oxide discs (60/80/120), two mini flap discs, two black sanding discs and one C wool disc, 101 pieces in total. High Performance: These sanding discs combine premium sanding grains (aluminum oxide/zirconium oxide/non-woven aluminum oxide/SiC/wool) with a solid base and high toughness, long lasting with high abrasion resistance. They can operate up to 23,000 RPM. Quick Change & Tight Connection: Simply twist to connect or remove, convenient and efficient. When the sanding disc is working, the direction of the disc thread is opposite to the friction force, ensuring stable operation even at high speeds. Wide Use: The assorted sanding discs are excellent for use on stainless steel, alloy, iron, non-ferrous surfaces and other non-metallic materials such as wood, glass, ceramic, stone. Suitable for various conditioning and preconditioning, oil paint removal, rust removal, glue or adhesive removal, sanding, cleaning, grinding, deburring, polishing, finishing, etc. High Compatibility: There are two 2" rubber pads in the set, can be attached to any 1/4" electric drill, air grinding tool, or die grinder. Excellent for most surface preparation like striping, burr removal, grinding, polishing, reverse circle, mirror, etc. Color: As shown Quantity: 101pcs