[Compatible machine]: 5 inch hook and loop sander liner is compatible with models DWE6423/6423K, DWE6421/6421K, DCW210B ROS. It is a direct substitute for the pad numbers DWE64233, N329079, RSP54. Not mentioned , Please check the style of your original pad. [Material]: Epoxy resin board + pu material is much better. It is difficult to break. [High-density hook]: High-density and uniform hook, strong adhesion and long service life. [Soft Rubber]: High-quality soft rubber can reduce the vibration of the track sander and improve the effect. [Easy to install]: Easy to install. Easy to install, effortlessly. Note: Screws are not included. Colour: Black Material: epoxy resin board + pu Size: 122mm Package Contents: 2 x grinding disc Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.