Outer diameter: 4.1/2" - 115mm.

 Outer diameter: 7" - 180mm.

 Hole diameter: 7/8" - 22.2mm.

 Maximum rotation for 115mm: 13,300 RPM.

 Maximum rotation for 180mm: 8,500 RPM.

 Sandpaper with abrasive grain of Zirconium Oxide and Aluminum Oxide.

 Suitable for grinding and finishing stainless steel, aluminum, ferrous and non-ferrous metals using angle grinders.

 Used on corners and non-straight surfaces at angles of 15 to 25 degrees.

 Support made of nylon fiber.