Compatible Models: This Makita 125mm chainring is suitable for Makita BO5010, KBO5030, KBO5031, KBO5041, and KXOB01Z; DeWalt DW420, DW420K, DW421, DW421K, DW423, DW423K, DW426, DW426K, D26453, D26453K, and D26451; Porter-Cable 390, 390K, 382, 343, 343K, and 343VSK. PU Material: This sanding pad is made of high-quality PU material, ensuring durability. Pads made from this material provide excellent surface smoothness and polishing performance, helping to protect the work surface. Easy to Use: This 8-hole sanding disc features 3 built-in mounting screw holes and a hook-and-loop design, allowing for quick and easy installation and fast sandpaper changes. Special Design: Designed with 8 holes to work with sanders equipped with dust collection systems. The dust collection feature efficiently captures dust and debris through 8 dust holes, directing them into the dust bag assembly for a cleaner work environment. Size Details: This sander pad has a diameter of 125mm, with 8 dust holes (11.5mm diameter) and 3 screw holes (4mm diameter), and a thickness of 11.5mm. Please verify compatibility with your sander before purchase.