BURR SET 150MM LONG 4 PIECE 1/4 SHANKCARBIDE STEEL EXTRA LONG SERIES WITHDOUBLE CUT - BALL - TREE- CONE STYLECarbide Burr Set, featuring four pieces of extra-long carbide steel with a double-cut, ball, tree, and cone style. Each piece measures 150mm in length and has a 1/4 inch shank diameter.