The dormer p88001 solid carbide rotary burr cylindrical set contains a variety of rotary burrs they all feature toughened and hardened steel shanks that provide rigidity and strength this prevents bending and reduces vibrations for an improved tool life ground to h6 carbide and h7 steel excellent impact strength that is able to withstand high forces and to withstand higher temperature without failing special brazing elements provide excellent braze strength the dormer 813 solid carbide rotary bu