Product Description: MAXIMUM STRENGTH & DURABILITY Proper selection of tungsten carbide and high quality steel combined with a specialized heat treatment process and controlled welding operation creates the optimum conditions required to attain the impressive strength and durability of an SS White bur. A study conducted at the University of Maryland confirms that SS White 557 burs are 84.67% stronger than Midwest Standard 557 Burs. Specs: Shank: RA Pack Size: 10-PK Length Overall: 50mm Caries Removal : Yes Single-Patient-Use : Yes General Dentistry : Yes