Dremmel tools electro plated (-Above-)
Diamondhead USA Electroplated Diamond Burrs for Stone-Electroplated The set of electroplated diamond burrs 20 pieces is used for etching and grinding marble, gemstones and other types of softer stones. They are used as lapidary tools and sculptor tools.
Dremmel tools sintered (-Below-)
Sintered burs will last 5 to 10 times longer than diamond plated burs and up to 100 times longer than various types of silicon carbide or aluminum oxide mounted abrasive points. The set consists of 20 pcs of sintered diamond burrs for engraving granite and concrete. Comes with a fine wood box with cover.