They are fine and work well I just found it a bit annoying and odd that they have no markings at all as to the grit number or even markings to indicate the To identify "history" of grain It's hard to tell the difference between blocks without paying them all side by side every time.
πͺ Weiler 56490 Mandrel Cutter Diameter
3 Review
π§ Efficient Astro Tools 1442 A32 Mandrel 4 20 for Precision Work
3 Review
π¦ A16010600Ux0647 Abrasive Sanding Sandpaper Mandrel" -> "High-Quality Abrasive Sanding Sandpaper Mandrel (Model A16010600Ux0647)
3 Review
π© Simpson Strong-Tie PMANDREL75 RC Drive Mandrel
3 Review