4-1/2" Backing Pad

4-1/2", X-Lock, Backing Pad, Medium Hardness, Works With Bosch High Quality Zirconia Fiber Discs, Features Snap On Mounting & Grinder Lever Wheel Release, Tool Free Disc Swap Features An Audible Snap When Mounted, Without A Spanner Wrench Or A Flange Nut, Application Focused Ideal For Metal Surface Finishing, Weld Blending & Rust Removal, Precision Manufacturing Optimized Pads For Less Vibration & Improved Material Removal Speed, X-Lock Abrasive Sanding Pads Are Not Backward Compatible With Standard 7/8" Arbor Mounts.