United Abrasives- SAIT 45655 Tungsten Carbide Die Grinder Bur SF5 6" Shank Double Cut/Alternate Cut 1/2" x 1 Tungsten Carbide construcion for long life and durability High Quality Manufacturing method delivers vibratin free operation Precision ground with diamond wheels to produce a very sharp uniform cutting edge Each enclosed in individual plastic capsules for storage and protection Excellent for confined or hard to reach areas