PRODUCT OVERVIEW 4-1/2" with 7/8" arbor. For right angle grinders. Cuts fast and outlasts sanding discs. Great flexibility. Ideal for rough or fine finishing. Multiple layers of Zirconia cloth flaps constantly exposing new extra sharp grinding points. Laminated by state-of-the-art automated equipment. Reinforced fiberglass backing plate. Each disc balance tested for vibration free grinding/finishing. Wheel size: 4-1/2"; Arbor 7/8"; Maximum rpm: 13,300; Tool type: right angle grinder. Description du français: DISQUE FEUILLETS TYPE 29 GR 40 4,5 PO Descripción español: DISCO MIL HOJAS TIPO 29 DE 11,43 CM GRANO 40 Product Details Abrasive Material:Zirconia Aluminum Applicable Materials:Ferrous Metal Stainless Steel Arbor Size:7/8 in Backing Material:Fiberglass Color:Blue Diameter:4-1/2 in Grade:Medium Grit Grade:Medium Grit Size:40 Length:8.25 in Speed Rating:13300 rpm Suitable for:Right Angle Grinders Type:Depressed Center Type 29 Width:6.75 in