Draovikra 6 Pack 903373 sander belt set is designed for compatible random orbit sanders that use N430442 style drive belts. It works with selected DeWalt models including DWE6420, DWE6421, DWE6423K, and DCW210B, and selected Porter Cable models such as 332, 333, 334, 343, and 335. This 6 pack is suitable for repair shops, tool users, or keeping multiple spare belts available for scheduled maintenance.