Vortec Pro Abrasive Flap Discs 4.5 40 Grit 7/8 Arbor 13 000 rpm Phenolic Weiler Vortec Pro Abrasive Flap Discs WARNING: This product can expose you to Silica a chemical known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov Abrasive Material: Zirconium Width [Nom]: 4.563 in Mounting: Arbor Hole Arbor Diam [Nom]: 7/8 in Applicable Materials: Steel; Most Metals; Cast Iron; Non-Ferrous Soft Metal Used With: Right Angle Grinder Wt.: 1.95 lb Grit: 40 Applications: Grinding; Finishing; Weld blending; Deburring Speed [Max]: 13 000 rpm Dia. [Nom]: 4 1/2 in Body Material: Phenolic Backing Length [Nom]: 4.563 in Height [Nom]: 5 1/2 in Tool Shape: Type 29