R8 imperial boring head silver with 9pc 1/2" tools for Bridgeport machines
9pc 1/2" tools range in length from 2-1/4" - 4-1/2" (including shank length). R8 TAPER THREADED FOR DRAW BAR 7/16 UNF. SILVER BORING HEAD 42mm +9pc Brazed tools IMPERIAL. Boring head is threaded 7/8" x 20 tpi.