Carbide Bur Set Cut Type Double Head Shape Ball Cylinder Inverted Cone Tree Head Diameter - Maximum 1/2 in Head Diameter - Minimum 1/4 in Number of Pieces 12 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Nickel Stainless Steel Steel Titanium Trade Number SB-1 SB-3 SB-5 SD-1 SD-3 SD-5 SF-1 SF-3 SF-5 SN-1 SN-2 SN-4 End Type Flat Radius System of Measurement Inch Head Dia 1/4 in 3/8 in 1/2 in Coating Bright (Uncoated)