Flatlanders Sculpture Supply Store › Sphere Tungsten Carbide Burrs Image 1 of 6 Image 2 of 6 Image 3 of 6 Image 4 of 6 Image 5 of 6 Image 6 of 6 Sphere Tungsten Carbide Burrs from $15.50 Sintered Tungsten Carbide burrs feature electronically bonded SSG carbide teeth. Coating: Select Coating Fine Coarse Size: Select Size 1" x 1" 1/4" x 1/4" 3/8" x 3/8" Quantity: Add To Cart Added! Sintered Tungsten Carbide burrs feature electronically bonded SSG carbide teeth.