Image 1 of 2 Image 2 of 2 4" Flexible Back Cup Wheel $58.00 Metal bond cup wheel mounted to rubber backer for reduced vibration.5/8”-11- Threaded connection Grit: 30 50 80 Add To Cart Added! Metal bond cup wheel mounted to rubber backer for reduced vibration.5/8”-11- Threaded connection Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like 3" Cup Wheel $48.00 Rigid Backer from $13.00 Aluminum Backer Pad from $15.00 Corner Repair/Removal Tool $30.00 Ceramic Edge Cup Wheel from $72.00