TFF M10 3-Piece Diamond Finger Bit Set for Stone Grinding

Shape, enlarge and refine stone cut-outs with the FF M10 3-Piece Diamond Finger Bit Set. Designed for use with compatible M10 angle grinders, the set includes three different bit diameters for controlled material removal in narrow grooves, internal curves and larger openings.

Each bit features a textured diamond-coated abrasive section that helps grind hard stone surfaces while maintaining control around detailed areas. The three sizes make the set suitable for refining sink cut-outs, correcting uneven openings, smoothing internal corners and creating or widening grooves.

Unlike conventional core bits, these finger bits are intended for shaping, grinding and edge refinement rather than drilling complete circular holes.

Key Features

Three Useful Sizes

Choose the most suitable bit for the required cut-out, curve or groove:

• Small: Long, narrow profile for detailed areas and tight grooves
• Medium: Suitable for general shaping and internal curves
• Large: Wider profile for faster material removal and larger openings

Diamond-Coated Abrasive Surface

The textured abrasive coating is designed to grind and shape hard stone materials with controlled, consistent contact.

M10 Threaded Interface

Each bit features an M10 female thread for direct attachment to compatible angle grinders with an M10 spindle.

Controlled Stone Shaping

Suitable for gradually enlarging openings, refining rough edges and smoothing curved sections that may be difficult to reach with standard grinding discs.

Compact and Easy to Change

The three individual sizes can be changed according to the detail level, opening width and amount of material that needs to be removed.

Suitable Materials

The set may be used on compatible materials such as:

• Marble
• Granite
• Quartz stone
• Engineered or artificial stone
• Microcrystalline stone
• Slate
• Similar hard stone surfaces

Material hardness and performance may vary. Always test the selected bit on an inconspicuous area first.

Suitable Applications

• Shaping sink and basin cut-outs
• Enlarging existing stone openings
• Smoothing internal curves
• Refining rounded corners
• Creating or widening grooves
• Correcting uneven cut-out edges
• Stone countertop fabrication
• Edge and contour refinement

Specifications

• Product type: Diamond finger grinding bit set
• Number of pieces: 3
• Thread interface: M10 female thread
• Finish: Gold
• Application: Grinding, shaping and edge refinement
• Tool compatibility: Compatible M10 angle grinders
• Material: Metal body with diamond abrasive coating

Approximate Bit Dimensions

Small Bit

• Head diameter: 6mm
• Abrasive length: 37mm
• Total length: 62mm

Medium Bit

• Head diameter: 10mm
• Abrasive length: 25mm
• Total length: 46mm

Large Bit

• Head diameter: 15mm
• Abrasive length: 20mm
• Total length: 41mm

Measurements are approximate and may vary slightly due to manufacturing tolerances.

Directions for Use

1. Switch off and disconnect the angle grinder from its power source.
2. Select the bit size suitable for the groove, curve or opening.
3. Screw the bit securely onto the compatible M10 spindle.
4. Secure the workpiece on a stable surface.
5. Wear the required personal protective equipment.
6. Start the grinder before bringing the bit into contact with the stone.
7. Guide the bit along the cut-out or edge using light, steady pressure.
8. Keep the tool moving to avoid excessive heat or uneven grinding.
9. Change to another bit size when finer or wider shaping is required.
10. Disconnect the tool before removing or changing the bit.

Usage Tips

• Allow the abrasive surface to do the work; excessive force may shorten bit life.
• Work gradually and check the shape regularly.
• Use suitable dust extraction when grinding dry.
• Do not use water with electrical equipment unless the grinder and work setup are specifically rated for wet operation.
• Confirm the grinder's thread size and operating-speed requirements before use.
• Stop immediately if the bit becomes loose, damaged or excessively hot.

Safety Information

• Wear safety goggles or a face shield.
• Wear suitable gloves, hearing protection and a dust mask or respirator.
• Stone and silica dust may be hazardous; use appropriate dust-control measures.
• Keep both hands in control of the power tool.
• Never attach the bits while the grinder is connected to power.
• Do not exceed the operating limits of the grinder or accessory.
• Keep bystanders away from the work area.
• Inspect each bit before use and do not operate damaged accessories.
• These bits are intended for compatible stone materials and are not conventional drill bits or hole saws.

What's in the box
1 x 6mm M10 Diamond Finger Bit
1 x 10mm M10 Diamond Finger Bit
1 x 15mm M10 Diamond Finger Bit