(20 Pcs) Grinding Wheels and Sanding Discs for Angle Grinder 4 1 2 Inch Pomsare Angle Grinder Wood Carving Disc 115mm, 4 PCS Wood Grinding 20x Flap Disc 4.5" 40 Grit Angle Grinder Sanding Grinding Wheels eBay 50 PCS 4 1 2" Grinding Wheels GW41278 Heavy Duty Angle Grinder HQ Parts 2" 40 120Grit Flap Wheel Sanding Disc Grinding Abrasive Angle Grinder 5. About this item : Grit Material Aluminum Oxide Item Dimensions LxWxH 9. 45 x 8. 86 x 4. 72 inches Compatible Devices Angle Grinder Grit Number 120 Color redDescription: Size: Diameter is 4 1 2, Arbor is 7 8, the flap disc is standard size and suitable for most air and electric grinders. Specification: Type #27, the grinder sanding discs are better for smoothing and blending surfaces. Maximum speed 13300 revolutions per minute (RPM), the wheels perform well. Package contains: 40 60 80 120 grit angle grinder sanding discs, 10 x 40 grit, 5 x 60 grit, 3 x 80 grit, 2 x 120 grit, the combination better matches your requirement.