Made of Tungsten Vanadium Steel Range 005-023 - Shaft Size 3/32" - 2.35mm Shank FOX JEWELERS BURS - ROUND ROTARY TOOL BITS Bur Set of 12 Round Ball Shapes by Fox Burs, made of Tungsten Vanadium steel for strength and durability in Germany. These fine Tungsten Vanadium Burs are made to the most rigorous quality standards and exceed ISO specifications. Burs are made with the high quality raw materials, in the state-of-the-art facilities. The precise fluting will guarantee the same smooth and even quality cutting and finishing. Burs are used by Jewelers and Jewelry Manufacturers, Dentistry and Dental Labs, Artists Model Designers, Hobbyists and Model Makers SPECIFICATIONS: JETS Product # 0201-01-0523 Made in Germany by FOX - Bur Shape: Round - Ball - Burs Count: 12 Piece Set - Shank - Shaft Size: 3/32" - 2.35mm - Material: Tungsten Vanadium Steel - Packaged: Clear Acrylic Reusable Plastic Box Sizes Numbered - Set Size Range: 005 - 023 (0.50mm to 2.30mm) - Sizes Included: 005 006 008 009 010 012 014 015 016 018 020 023 Item is new in Original Clear Plastic Storage Case.