Overview

Diamond grinding disc tool for STI Prep/Master grinder systems, designed with 2 round metal bond segments for concrete floor grinding, surface preparation, leveling, and scratch removal.

Use this tool during the metal grinding stage after coating removal or when the concrete surface is ready for opening, profiling, or scratch control. Choose the grit and bond according to concrete hardness, current floor condition, and the required grinding result.

For broader machine-based selection, check Shop by Machine or browse metal bond grinding tools.

Best For

• Concrete floor grinding
• Surface preparation before polishing
• Slab opening and light leveling
• Scratch removal after earlier prep work
• STI Prep/Master grinder workflows using the matching tool plate format

Features

• 2 round segment metal bond design
• Suitable for concrete grinding and surface preparation
• Available grit options for different grinding stages
• Soft, medium, and hard bond options for different concrete conditions
• Stable contact pattern for general concrete prep work
• Used before hybrid transition pads or resin polishing pads

Grit and Bond Selection

Lower grits are used for more aggressive grinding, opening cuts, and heavier scratch removal. Higher grits are used when the floor needs a finer scratch pattern before transition or polishing.

Choose the bond according to concrete hardness. Soft bond is used for hard concrete, medium bond for general concrete, and hard bond for soft or abrasive concrete.

If the floor hardness is unclear, test a small area first or send the jobsite details before ordering.

Fitment Note

This tool is listed for STI Prep/Master grinders using the matching tool plate format. Fitment should be confirmed before ordering.

Before ordering, confirm:

• Machine model
• Tool plate or holder type
• Required grit and bond
• Segment style
• Quantity needed for the full grinder set
• Current floor condition and target result

If the tool plate or holder interface is unclear, check adapters and plates or send machine and plate photos through Contact Us.

Polishing Workflow

If the floor still has epoxy, glue, paint, mastic, or coating residue, start with PCD coating removal tools before using metal bond grinding tools.

After metal grinding, use hybrid pads if visible metal scratches need refinement before final polishing.

For the final polishing stage, continue with resin polishing pads after the scratch pattern is controlled.

Shipping

Order processing and delivery time depend on stock status, order quantity, destination country, and shipping method. If you have a deadline, send the required delivery date before ordering.

FAQ

Q1: What machine is this tool for?
It is for STI Prep/Master grinder workflows using the matching tool plate format. Confirm the machine model and holder before ordering.

Q2: What is this tool mainly used for?
It is mainly used for concrete floor grinding, surface preparation, leveling, and scratch removal.

Q3: Is this a polishing tool?
No. This is a metal bond grinding tool used before hybrid transition or resin polishing stages.

Q4: How do I choose the right bond?
Choose the bond according to concrete hardness. Soft bond is for hard concrete, medium bond is for general concrete, and hard bond is for soft or abrasive concrete.

Q5: What comes after this tool?
After metal grinding, use hybrid pads to refine scratches, then continue with resin polishing pads for polishing.

Q6: What should I send before ordering?
Send your machine model, tool plate photo, current floor condition, concrete hardness if known, required grit, bond preference, target finish, and quantity.