Overview

This 4” rigid rubber backer pad is built to hold hook & loop (Velcro) diamond polishing pads securely. The rigid body keeps your pad flatter and more stable, helping you control edge-to-center pressure and reduce wobble during polishing.

Best for

• 4” hook & loop diamond polishing pads

• Concrete polishing (hand grinder / variable speed polisher)

• Stone polishing and detail work

• Situations where you want a firmer, flatter backing support

Features

• Rigid rubber body for stable pad support

• Hook & loop face for fast pad changes

• Two thread options: M14 or 5/8-11

• Compact 4” size for control on edges and tight areas

• Jobsite-ready construction

Fitment Note

Choose the thread that matches your machine spindle: M14 (common outside the US) or 5/8-11 (common in the US). If you’re unsure, send a photo of your spindle thread and we’ll confirm.

Shipping Note

Most orders dispatch in 3–5 business days.

FAQ

• Is “rigid” the same as “hard”?

Rigid means firm / not flexible. This pad is designed to stay flatter than soft backers for better control.

• What pads fit this backer?

4” hook & loop (Velcro) polishing pads.

• Which thread should I choose: M14 or 5/8-11?

Check your machine spindle. US grinders are commonly 5/8-11; many other markets use M14.