The 5"" hook-&-loop pad is the direct replacement for pad part number DWE64233 and N329079, working with DeWalt models DWE6423/6423K, DWE6421/6421K, DCW210B Random Orbital Sander. With Metal Backing, harder and more difficult to be broken. With Soft Rubber and High-Density Hook. Easy screw-on Installation. Item Dimensions LxWxH4.72 x 4.72 x 0.39 inches Package includes: 5"" hook-&-loop pad with 8 dust holes and 4 screw holes