STI Tool Plate – 2420 & 4430 Prep Master

The STI Tool Plate is the tool plate for the Prep/Master® 2420 and 4430 grinders — it holds all STI tooling and diamonds for grinding and polishing across the floor. It’s the genuine plate built for your machine.

Call for pricing and availability, or request a quote — you’ll talk to a real surface-prep expert, not a call center — fast answers and real recommendations.

What It’s For

• The tool plate for the Prep/Master® 2420 and 4430
• Holds all STI tooling and diamonds
• For grinding and polishing
• A genuine Prep/Master® part

For the 2420 and 4430

This is the standard tool plate for the 2420 and 4430 — these machines don’t have an edge-plate option, so this is the plate they run. (Have a 2807 or 3030 instead? See the STI Tool Plate for the 2807 & 3030.) Not sure which fits your machine? Call us with your model and we’ll confirm.

Frequently Asked Questions

What machines does it fit? The Prep/Master 2420 and 4430.

What tooling does it use? It holds all STI tooling and diamonds.

Is there an edge plate for these? No — the 2420 and 4430 don’t have an edge-plate option; this tool plate is the plate for them.

Order Your Prep/Master Parts Today

Call (815) 941-4800 x 1 or fill out our contact form. See our grinder accessories, diamond tooling, and machines.