
The large, 4"-diameter See-Thru™ backpads, cushion pads, and abrasive discs in this JoolTool™ add-on kit deliver a larger working surface and improved airflow, ideal for shaping and polishing hard stones (Mohs hardness up to 9.5). This kit is designed for those who already own a JoolTool sharpening and polishing system and the soft stone add-on kit. The components of this kit are just the thing for agate, quartz and sapphire, just to name a few. This ready-to-use kit allows you to take a stone from its rough state all the way to a high polish, and it is very useful for removing scratches from watch crystals.