Description
Proxxon Diamond Grinding Bits — Spherical Shape, 4.4mm (Pack of 2)
Proxxon diamond-coated grinding bits in spherical shape — designed for precision grinding and shaping on concave surfaces, curved recesses, and bowl-shaped profiles in hard materials including stone, ceramic, glass, and hardened metals. The spherical profile delivers smooth, controlled material removal on curved geometry where flat or cylindrical bits can't conform.
Key Features
- Spherical shape — ideal for concave surfaces, curved recesses, and bowl profiles
- 4.4mm tip diameter — precision access in tight and curved spaces
- Diamond-coated abrasive — long service life on hard materials
- Pack of 2 — replacement pair for continuous production use
- Compatible with all Proxxon MICROMOT rotary tools (3.2mm shank)
Suitable Materials
- Stone — granite, marble, ceramic
- Glass
- Hardened metals
- Porcelain
Grinding Bit Shape Guide
| Shape | Best For |
|---|---|
| Cylinder | Flat-bottomed recesses, slots, flat surface grinding |
| Spherical (this bit) | Concave surfaces, curved recesses, bowl shapes |
Works Well With
- Proxxon LWB/A Cordless Long Neck Rotary Tool — primary cordless host tool for MICROMOT bits
- Proxxon Diamond Grinding Bits Cylinder 5mm (No. 28246) — companion bit for flat surface work
Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.