cutting tools: Last 5-10 times longer than diamond plated bur For dental lab,jewelry,lapidary,gemstone 5 grits Technology:1. Consist of ... :1. Sintered diamond burs can be used by dental labs, jewelry, lapidary and gemstone.2. All burs are with HP shank, 3/ ... glazePre-polish and fine finishSpecifications: 89 items for select HP shank 320 mesh bullet shape dental lab sintered diamomd cutting tools