What the Kit Includes
The Pepetools Radial Disc Assortment Kit is designed to give you a complete set of abrasive discs for polishing metal, from coarse material removal to ultra-fine finishing. The kit contains 83 pieces: radial discs in three sizes and multiple grits, plus three mandrels to fit common rotary tool shafts.
If you're setting up a jewelry polishing station or restocking your bench, this kit covers the full sequence of grits so you don't have to buy discs individually. The included organizing case keeps everything sorted and accessible.
Kit Contents at a Glance
- Radial Disc Assortment Kit - 5/8", 7/8" 1" (83 piece): Includes 4 each of 5/8" radial discs in grits: Yellow (80), White (120), Red (220), Blue (400), Pink (600), Peach (6 micron), Light Green (1 micron). The 5/8" discs are ideal for tight spaces and small jewelry components like earring backs or prongs.
Radial Disc Assortment Kit - 5/8", 7/8" 1" (83 piece) - Radial Disc Assortment Kit - 5/8", 7/8" 1" (83 piece): Includes 4 each of 7/8" radial discs and 1" radial discs in select grits: Brown (36), Dark Green (50), Blue (400), plus the same 7 grits as 5/8" for 7/8" discs. Larger discs cover more surface area, speeding up work on flat areas or larger pieces. The 1" discs include ultra-coarse (36 grit) for aggressive material removal.
- Radial Disc Assortment Kit - 5/8", 7/8" 1" (83 piece): Comes with three mandrels: 1/8" x 1/16", 1/8" x 1/8", and 3/32" x 1/16". These mandrels fit common rotary tool collet sizes, so you can use the discs with most flex shafts, pendants, or micro motors without buying extra adapters.
Choosing the Right Disc Size
The kit includes three disc diameters: 5/8", 7/8", and 1". Smaller discs give you more control in detailed areas and are less likely to catch on edges. Larger discs cover more surface area, which is useful for polishing larger flat or curved surfaces.
For most jewelry work, you'll reach for the 5/8" discs first. When you need to polish a larger area or remove material faster, the 7/8" or 1" discs save time. The kit gives you enough of each size to try both and see what suits your typical projects.
Grit Progression for Polishing
Radial discs work best when you follow a logical grit sequence. The kit provides a full range from ultra-coarse to ultra-fine. Here's a typical order for polishing metal from rough to mirror finish:
- Coarse material removal: Start with Brown 36 grit (1") or Dark Green 50 grit (1") for removing scratches, sanding marks, or casting flash.
- Medium smoothing: Move to Yellow 80 grit (all sizes), then White 120 grit to refine the surface.
- Standard polishing: Use Red 220 grit to remove the previous scratches and prepare for finer grits.
- Fine finishing: Blue 400 grit and Pink 600 grit create a satin sheen and remove fine lines.
- Extra-fine to ultra-fine: Peach 6 micron and Light Green 1 micron produce a high-luster polish suitable for final presentation.
What the Kit Doesn't Tell You
The kit does not include instructions for recommended operating speeds or pressure. For best results, use the discs at moderate speed (around 10,000–15,000 RPM is typical for radial discs, but check your rotary tool's manual) and let the abrasive do the work. Pressing too hard can wear out the disc quickly or leave uneven marks.
Also, the evidence doesn't specify whether the discs are compatible with wet polishing. If you plan to use them with water or lubricant, test on a scrap piece first to see how the disc holds up.
