STI Edge Plate – Prep Master 2807 & 2818

STI Edge Plate – Prep Master 3030 & 3038

STI Edge Plate – Prep Master 2807 & 2818 is a genuine Prep/Master® accessory designed to maximize the performance of your STI-2807 grinder by allowing it to grind within just ½ inch (1.27 cm) of walls and edges. This edge plate holds all STI tooling and diamond tools while covering 66% more square footage than STI’s previous tool plate, helping contractors complete grinding and surface preparation faster with fewer passes. By eliminating the need for a separate hand grinder, it streamlines floor preparation and delivers consistent edge-to-edge results with a single machine.

Designed specifically for the Prep/Master® 2807 & 2818, this edge plate is ideal for perimeter grinding and finishing applications where standard grinding heads leave unground borders. It enables complete floor coverage without switching equipment, improving productivity while maintaining compatibility with your full STI tooling lineup. As a genuine STI replacement part, it delivers reliable performance for professional concrete grinding and polishing, helping contractors finish floors more efficiently and achieve better edge quality.

Main Features

• Cuts within ½” (1.27 cm) of walls and edges.
• Eliminates the need for hand grinding along room perimeters.
• Holds all STI tooling and diamond accessories.
• Covers 66% more floor area than STI’s previous tool plate.
• Designed specifically for Prep/Master® 2807 & 2818 grinders.
• Genuine STI replacement part.
• Improves productivity by enabling complete floor grinding with a single machine.

Specifications