7/8″ (22mm) Dedeco Sunburst TC Radial Bristle Discs – Standard
£1.60
The industry-standard radial disc for everyday finishing.
Best for: General cleaning, deburring and polishing across most applications
Versatility: Balanced surface coverage and precision control
Setup: Use individually or stack 3 – 6 discs on an MM503 mandrel
The Dedeco 7/8″ (22mm) radial bristle disc is the most widely used size in the range, offering the ideal balance between precision, surface coverage and control.
Suitable for everything from delicate jewellery to small engineering components, it is the go-to choice for professionals who need a reliable, versatile finishing tool.
Diameter: 7/8″ (22mm)
Arbor Hole: 1.6mm
Recommended Mandrel: MM503 Screw-Top Mandrel (2.35mm or 3mm shank options)
Format: Standard TC (curved bristles)
Grit Range: 80 grit to 1 micron
Key Benefits
- The most versatile size for blending and polishing contours
- Conforms to surfaces without flat-spotting or removing detail
- Consistent performance: Abrasive is embedded throughout the bristles
Moleroda Product Code: DED-TC-SMALL
The Professional Standard for Radial Disc Finishing
The Dedeco 7/8″ radial disc is considered the benchmark size for most finishing applications.
It provides enough surface area to work efficiently on flat and curved surfaces, while still offering the control needed for detailed work. For many users, this is the only size required for the majority of tasks.
Balanced Performance
Combines surface coverage with precision, making it suitable for a wide range of applications.
Consistent Control
Ideal peripheral speed for micromotors and flexible shaft machines.
Flexible Setup
Can be used as a single disc or stacked to create a wider polishing head
Designed for Stacking & Versatility
The 7/8″ format works particularly well when stacked on an MM503 mandrel.
Benefits of stacking
- Increased contact area
- Faster material removal
- More consistent finishing across curves
Typically, users stack 3 – 6 discs depending on the task.
Explore pre-assembled 7/8″ (22mm) Dedeco Sunburst TC 4-Ply Sets.
Typical Applications
Jewellery & Precious Metals
- Removing fire scale
- Smoothing cast surfaces
- Pre-polishing and finishing
Engineering & Fabrication
- Light deburring
- Cleaning oxidised components
- Surface preparation
Restoration & Decorative Work
- Cleaning intricate castings
- Preserving surface texture
Automotive & Electrical
- Cleaning contacts and small components
- Detailing metal parts
Compare the 7/8″ Range
Not sure which 7/8″ format is right for your job?
The standard disc is the all-rounder, but the 7/8″ range also includes specialist formats for heavier cutting, narrow access and ready-to-use mounted setups.
| Format | Best for |
|---|---|
| Standard discs | General cleaning, blending and polishing |
| Dual discs | Faster cutting and heavier deburring |
| Knife-edge discs | Grooves, prongs and tight detail areas |
| 4-ply mounted sets | Ready-to-use stacked setup with mandrel |
| Assortment kit | Trying the full grit range in one set |
Grit Range
| Colour | Grade | Typical Use |
|---|---|---|
| Yellow (Coarse) |
80 Grit (Aluminium Oxide) |
Heavy cleaning |
| White (Medium) |
120 Grit (Aluminium Oxide) |
Light deburring |
| Red (Standard) |
220 Grit (Aluminium Oxide) |
Blending & surface prep |
| Blue (Fine) |
400 Grit (Aluminium Oxide) |
Fine finishing |
| Pink (Fine) |
600 Grit (Pumice) |
Pre-Polishing |
| Peach (Extra-Fine) |
6 Micron (Aluminium Oxide) |
Fine polishing |
| Light Green (Ultra-Fine) |
1 Micron (Aluminium Oxide) |
Final high finish |
Want to try every grade?
Choose the 7/8″ assortment kit for a complete grit progression in one set.
Mounting & Compatibility
- Arbor hole: 1.6mm
- Recommended mandrel: MM503 screw-top mandrel (2.35mm (3/32″) or 3mm shank options)
- Supplied as unmounted discs
- Typically mounted in 3-6 layers to provide additional stability and increase performance
Important:
These discs have a 1.6mm centre hole and require an MM503 mandrel.
Do not use with MM304 mandrels – the 3mm screw is too large for these discs.
Operating Guidelines
Recommended Speed:
3,000 – 18,000 RPM (5,000 RPM for Woodworking)
Stacking & Orientation:
For best results, stack 3 – 6 discs to create a flexible, cushioned abrasive head.
Ensure the bristle curvature follows the direction of rotation.
Technique:
Use light pressure and allow the bristles to conform to the surface.
Complete Your Finishing Process
The Right Mounting
Use the MM503 screw-top mandrel. Stack 3 – 6 discs for best stability, surface contact and finishing consistency.
Need faster cutting?
Use 7/8″ Dual Discs for heavier deburring, fire-scale removal and first-stage cleaning.
Need better detail access?
Use 7/8″ Knife-Edge Discs for prongs, grooves, channels and recessed areas.
Browse the Full Range
| Weight | 0.01 kg |
|---|---|
| Disc Size / Diameter | 7/8" (22mm) |
| Arbor (Centre Hole) | 1/16" (1.6mm) |
| Disc Type | Standard |
| Bristle Type | TC (Curved) |
| Grit / Grade | 80 Grit (Coarse) [Yellow] – Heavy Cleaning, 120 Grit (Medium) [White] – Light Deburring, 220 Grit (Standard) [Red] – Blending, 400 Grit (Fine) [Blue] – Fine Finishing, 600 Grit (Fine) [Pink] – Pre-Polish, 6 Micron (Extra-Fine) [Peach] – Fine Polishing, 1 Micron (Ultra-Fine) [Light Green] – Mirror Finish |
| Unit of Sale | Individual Disc (No Mandrel) |
| For use on | Metal, Wood, Plastic |
| Tool | Rotary Tool, Micromotor, Flexible Shaft Machine, Dremel, Pencil Grinder |
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