Key Features
Overview
The Mirka 23-612-320 Bulldog Gold Grip Disc is a 5-inch extra fine sanding disc for finish sanding and surface refinement. This is a hook and loop sanding disc designed for fine finishing work on sanders that accept this style of disc. Model Number: 23-612-320. If you are trying to clean up a surface without leaving a deep scratch pattern, this grit range is where the work starts getting serious.
What matters here is the balance of size, grit, and abrasive type. The 320 grit rating puts this disc in the finishing category, where the goal is smoothing, blending, and prepping a surface for the next step rather than removing a lot of material. The aluminum oxide abrasive gives you a familiar, controlled cut that works well when you need consistent finish quality.
The 5-inch diameter is the standard size a lot of pros and serious DIY users already run, so it is easy to work across broad faces while still keeping good control around edges and tighter sections. The coated abrasive construction is built for sanding duty, and the grip-style backing is meant for quick disc changes so you can move from one grit stage to the next without wasting time.
This Mirka sanding disc makes the most sense for users doing finish prep, light refinement, and final sanding passes where surface quality matters more than raw removal speed. If you work in woodworking, refinish surfaces, or handle detailed prep before coating, the Mirka 23-612-320 Bulldog Gold Grip Disc fits that kind of job well.
Controlled Finish for Final Prep
When you are past rough shaping and into finish prep, grit choice matters more than brute force. This disc is set up for smoothing and refining so the surface is ready for the next step.
- 320 grit extra fine abrasive is suited to finish sanding and blending work
- Aluminum oxide abrasive helps deliver a consistent scratch pattern
- 5-inch size is easy to control on common sanding tasks
Key Specifications
| Diameter | 5 in |
|---|---|
| Grit Number | 320 |
| Grit Type | Extra Fine |
| Abrasive Material | Aluminum Oxide |
| Construction Type | Coated |
| Attachment Type | Grip / Hook and Loop |
Built For
Tool Nut’s Take
Mirka 23-612-320 Bulldog Gold Grip Disc for clean finish sanding
This is the kind of sanding disc you buy when the surface actually matters and you are done with the rough stuff.
- Who it’s for: Users doing finish prep, detail sanding, and final passes before coating or assembly.
- Why it stands out: The 5-inch size, 320 grit rating, and aluminum oxide abrasive put it right in the sweet spot for controlled finishing work.
- Worth knowing: This is a fine-grit disc, so do not expect aggressive removal. It is built to refine the surface, not hog material.
Common Questions
- What size is this disc? This disc is 5 inches in diameter.
- What grit is it? It is 320 grit, listed as extra fine.
- What abrasive does it use? It uses aluminum oxide abrasive.
- What kind of sanding is it best for? It is best suited to fine finish sanding and surface refinement rather than heavy stock removal.
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