Rubi 4" Backup Pad — The Mount That Makes Your Pads Perform

A polishing pad is only as good as what it's spinning on. This Rubi 4" hook-and-loop backup pad mounts 4" diamond polishing pads to your grinder or polisher and keeps them centered, secure, and in full contact with the surface — so your finish comes out even instead of chattered and patchy.

A standard 5/8"-11 thread fits most grinders and polishers, the hook-and-loop face holds pads centered and snug, and a semi-flexible backing maintains consistent surface contact while damping vibration. The result is more consistent finishes with less chatter and less uneven pad wear.

Why Tile Pros Choose It

• Keeps pads centered: Hook-and-loop face holds them secure and true
• Universal thread: Standard 5/8"-11 fits most grinders and polishers
• Even contact: Semi-flexible backing maintains consistent surface contact
• Less chatter: Damps vibration for smoother, more consistent finishes
• Even pad wear: Proper backing makes your polishing pads last longer

Pro tip: Center each pad carefully when you press it on — an off-center pad wobbles, chatters, and wears unevenly. Replace the backup pad once the hook-and-loop stops gripping firmly; a pad that slips ruins both the finish and the diamond pad.