4” Angle Grinder Pad Holder with Centering Pin | Mechanic Centrum PRO 2.0

4" Angle Grinder Pad Holder for Polishing Pads

The Mechanic Centrum PRO 2.0 4" pad holder is a professional-grade angle grinder backing pad designed to securely hold polishing pads in place during grinding and finishing.

Featuring an integrated centering pin, this pad holder prevents slipping, improves alignment, and delivers more consistent polishing results — especially during detailed edge work on porcelain tile and stone.

Secure Polishing Pad Alignment with Centering Pin

This angle grinder pad holder with centering pin ensures:

• Perfect pad alignment during operation
• No slipping or shifting — even when Velcro backing begins to wear
• Consistent polishing performance across the full pad surface

Pad Holder vs Standard Backing Plate — What’s the Difference?

• Standard backing plate — relies on Velcro only; pad can shift as Velcro wears
• Centrum PRO 2.0 (centering pin) — mechanically locks pad in place for greater stability and precision

Removable Centering Pin for Universal Compatibility

The removable centering pin (14.7mm diameter, 2.5mm height) allows:

• Use with different pad hole sizes
• Compatibility with multiple pad brands
• Flexible setup depending on application

Durable Aluminum Construction for Professional Use

Built from high-strength aluminum, this pad holder offers long-lasting durability, stable performance under load, and resistance to wear in demanding jobsite environments.

Compatible with Most 4" Angle Grinders

Fits standard 4" (100mm) angle grinders and most polishing pads across brands.

Product Specifications

Common Applications

• Polishing porcelain tile edges
• Refining stone surfaces
• Granite and concrete polishing
• Surface finishing and preparation
• Precision edge work

Ideal For

• Tile installers
• Stone fabricators
• Concrete finishers
• Contractors
• Professional polishing applications

Frequently Asked Questions

What is a pad holder for an angle grinder used for?

It is used to securely hold polishing pads in place during grinding and polishing, preventing slipping and improving surface finish quality.

Does the centering pin prevent slipping?

Yes, it keeps the pad aligned and prevents movement during operation — even when Velcro backing begins to wear.

Will this fit my angle grinder?

Yes, it fits most standard 4" (100mm) angle grinders.

Can I use pads from other brands?

Yes, it is compatible with multi-brand polishing pads. The centering pin can be removed for pads with different hole sizes.

What if my pad hole is smaller?

The centering pin is removable for universal compatibility with different pad formats.

Works Well With

• Distar CoolPAD 4" Diamond Polishing Pad — primary compatible pad; the Centrum PRO 2.0 locks the CoolPAD securely to your 4" grinder
• Mechanic 4" Angle Grinder Backing Plate — standard backing plate alternative for pads that don’t require a centering pin
• Distar Hand Pad 2 Series — manual polishing pads for finishing edges where power tools can’t reach
• Soft Edge DGM-S Grinding Cup — grinding cup for edge preparation before polishing
• Elegant 4" Diamond Blade — precision cutting blade for the same 4" grinder format

Further Reading

• Cutting, Grinding, and Polishing Porcelain Tile for Seamless 45° Corners
• How to Polish Porcelain Tile Edges with the Proxxon WP/A + Distar CoolPAD
• Finishing Cuts in Porcelain Tile Without a Tile Saw
• The More Efficient the Diamond Tool, the Longer the Power Tool Lasts

Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. Please see our return and refund policy here.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.