Diamax 4″ Plastic Backer Pad

The Diamax 4″ Plastic Backer Pad is a professional-grade support tool designed to provide reliable stability and even pressure for diamond polishing and grinding pads on natural and engineered stone surfaces, including granite, marble, quartz, and engineered stone. Its lightweight yet durable plastic construction allows for easy handling and precise control during both wet and dry polishing or grinding operations, reducing operator fatigue while maintaining consistent results.

This backer pad serves as a stable platform for polishing and abrasive pads, helping to evenly distribute pressure across the stone surface, minimize chatter, and improve overall surface quality. Its 4″ diameter is well-suited for detailed edge work, small-radius profiles, and confined areas where larger backer pads cannot reach effectively, while still providing enough surface area to support efficient polishing and grinding.

Equipped with a standard 5/8″‑11 threaded arbor, the Diamax 4″ Plastic Backer Pad is compatible with a wide range of angle grinders, air polishers, and other polishing machines, making it versatile for shop fabrication, field installation, and restoration tasks. It is optimized for use with Velcro-backed resin, metal-bond, or hybrid polishing pads, ensuring quick attachment and secure operation for both beginner and experienced stone professionals.

This backer pad is ideal for stone fabricators, countertop installers, tile and stone contractors, and restoration specialists who require consistent, controlled polishing or grinding on flat surfaces, edges, or detailed profiles. By providing a reliable, stable foundation, the Diamax 4″ Plastic Backer Pad enhances the efficiency and precision of polishing workflows, helping operators achieve smooth, even, professional-grade finishes with minimal effort and maximum control.

4" Plastic Backer Pad – Lightweight, durable backing plate for consistent attachment of polishing and grinding pads.

Key Features & Specifications

Construction

High-quality plastic for long-lasting durability and stable pad support during polishing and grinding tasks.

Attachment / Mounting

Compatible with Velcro-backed or standard diamond pads, providing secure grip and minimal pad movement.

Intended Use

Designed to support wet or dry polishing and grinding on granite, marble, quartz, and engineered stone.

Flexibility & Control

Offers stable pressure distribution for smooth and uniform polishing results on flat or slightly contoured surfaces.

Max RPM

Suitable for high-speed operation (check machine specifications for safe limits).

Compatible Tools

Works with hand polishers, angle grinders, and polishing machines compatible with plastic backer pads.

Applications

Perfect for countertops, stair edges, tabletops, and decorative stone surfaces requiring precise, high-quality finishes.

Available Items and Specifications