The FGXL 1557 is a premium tungsten carbide bur designed for smooth cavity wall finishing, inlay preparation, and rounded line angles. Its fissure design with rounded end for smooth internal angles delivers clean, efficient cutting with minimal vibration and excellent tactile feedback. Key Features Shape: Round End Fissure — fissure design with rounded end for smooth internal angles Material: High-quality tungsten carbide for long-lasting sharpness and durability Shank: FGXL (Extra-Long Friction Grip) — compatible with standard high-speed handpieces (extended reach) Common Applications Smooth cavity wall finishing Inlay and onlay preparations Creating rounded internal line angles Precise wall formation Why Choose Koyo Dental? All Koyo Dental burs are manufactured to strict quality standards and shipped from our US warehouse in Irvine, CA. Enjoy factory-direct pricing, same-day shipping, and consistent cutting performance across every bur in the pack.