The Z379-023F is a football zirconia-optimized diamond bur on an FG friction-grip (high-speed handpiece), designed for cutting and sectioning zirconia and PFM crowns for removal. Shape: Football (ISO figure family 368/379) Material: Diamond, optimized for zirconia and PFM Head size: 2.3 mm head Shank: FG friction-grip (high-speed handpiece) Grit: Fine (red band) Sterilizable, single-use friendly; consistent quality at clinic-friendly pricing Cross-reference: built to the universal ISO figure 379 standard — a direct match for any brand's 379 football bur, including Brasseler, Komet and SS White. Match the head-size and grit to replace your current bur.Not sure this is the right bur? See our Bur Cross-Reference & Usage Guide or email [email protected] with the number you currently use.