Description Crafted With The User In Mind Using High-Quality Materials And World-Class Craftsmanship, Quality Assured And Made To Withstand Even The Toughest Jobs. Designed With The User In Mind And Fit To Match The Needs In The Shop, At Home Or In The Field - Proven And Tested For Durability And Function In Real-World Conditions.Zirconia grit enables 3X faster material removal than fiber resin metal sanding discsPremium abrasive cloth provides up to 15 X longer life than fiber resin metal sanding discsType 29 fiberglass backing provides grinding angle of 20-25 degreesZirconia grit enables 3X faster material removal than fiber resin metal sanding discsPremium abrasive cloth provides up to 15X's longer life than fiber resin metal sanding discsType 29 fiberglass backing provides grinding angle of 20-25 degreesProduct Dimensions: 4.5"L x 4.5"WCutting Diameter: 4.5 Inches