R8 To 4JT Drill Chuck Arbor Adapter R8 4 Jacob Taper JT4 Milling CNC
R8 to 4JT Drill Chuck Arbor Adapter. Taper: 4JT. Long End Is R8, Short End Is 4JT. Arbor Will Fit All Drill Chucks That With A 4JT bore And Will Fit On Any Machine Tool With A R8 Spindle. Key Way Size Is 4mm.