Features： 1、SOLID AND IBRATION REDUCTION: Made of alloy steel liner and soft rubber, harder than plastic liner, harder to break, reduce vibration of track sander and improve grinding effect 2、UNIFORM WITH HIGH DENSITY: Hook surface hook with uniform arrangement, high density, good viscosity, providing higher sandpaper grip 3、PROLONG LIFE: The replacement pad of sanding machine can prevent the damage of the tray frame in the work, prolong the service life, and ensure the safety and polishing effect 4、STABLE AND DURABLE: You need this alloy steel polishing pad to finish your polishing job better, no longer worry about the high temperature caused by friction melting your polishing pad, and no longer worry about the frequent replacement of polishing pad to cause your loss 5、WIDE APPLICATION: Suitable for 6in 17 hole round mill, compatible with 6in 17 hole cushion, 6in 17 hole sandpaper, suitable for high speed polishing, ventilation design to provide fresh air, strong heat dissipation to extend service life Specification： Item Type: Sander Pad Material: Alloy steel and rubber Maximum Speed: 12000RPM Package List： 1 x Sander Pad