Compatible Models - Sander pad for DeWalt DWE64233 & N329079 compatible with DEWALT DWE6420, DWE6421, DWE6421-B2, DWE6421-B3, DWE6421-BR, DWE6421K, DWE6423, DWE6423K, DCWE210B random orbital sander Specification Size - 5 inch Replacement Orbital Sander pad has 4 screw holes and 8 dust holes, Center distance of non-adjacent screw holes is 1.97 inch / 50 mm, Center distance of adjacent screw holes is 1.38 inch /35 mm, please confirm your machine size before purchasing Product Function - Hook and loop sander pad can prevents sander damage to disc holders in the work. High-density hook prevent sandpaper from flying out during work. 8 Holes design for effective use with dust collection, Prevent damage to disc holders and features Product Material - Orbital sander pad is made of engineering plastics and high quality soft rubber for more long lifetime. The engineering plastics are hard to be damaged, and the soft rubber can can reduce vibration from orbital sander for improved results How to