The DeWalt DW4706 is a 4-1/2" Diamond Wheel Backing Flange. The Flange is compatible with 4-1/2" grinders with a 5/8"-11 arbor. It provides extra support and surface material. The backing flange is designed for use with the DW402, DW402G and DW818 DeWalt grinders.
Best Price: 4.22 USD at Tool King