Description
The Proxxon 28222 is a pack of two spherical diamond grinding bits, 1.8mm in head diameter, with a 2.35mm stainless steel shank, designed for fine grinding, engraving, and chiseling hard materials like steel, glass, ceramics, porcelain, and plastics using rotary tools (e.g., Proxxon Micromot).





![Proxxon Diamond Grinding Bit [28222]](https://www.hansinfinitetools.com/wp-content/uploads/2026/01/28222-2-1.jpg)
![Proxxon Diamond Grinding Bit [28222] - Image 2](https://www.hansinfinitetools.com/wp-content/uploads/2026/01/28222-1.jpg)
![Proxxon Diamond Grinding Bit [28222] - Image 3](https://www.hansinfinitetools.com/wp-content/uploads/2026/01/28222-3-1.jpg)
![Proxxon Engraving Tool GG12 [28635]](https://www.hansinfinitetools.com/wp-content/uploads/2025/12/28-635-2-300x300.jpg)
![Proxxon Diamond Bit ball shaped 3.2mm [28234]](https://www.hansinfinitetools.com/wp-content/uploads/2026/01/28234-2-1.jpg)
![Proxxon Grinding & Polishing Mach SP/E [28030]](https://www.hansinfinitetools.com/wp-content/uploads/2025/12/28-030-300x300.jpg)
![Proxxon Diamond Grinding Bit [28212]](https://www.hansinfinitetools.com/wp-content/uploads/2026/01/28212-2-1.jpg)
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