Panther Shallow Hart Burs made of Vanadium Steel Burs Made In Germany By Panther with 3/32" Shanks. PANTHER BURS - SHALLOW HART BUR 70. SETTING BUR FIG 446 - SIZE 005 – 0.5mm. The 446 Setting Burs are useful for de-burring or enlarging holes, carving recesses for sweat soldering, and refining stone settings.