Shars CAT40 2" OD 7/8"-20 Threaded Boring Head Tool Holder P}
BORING HEAD CATEGORYBoring Head Arbors. Boring head seating surface is precision ground finished to 0.0002" TIR. Boring Head in the picture shown is NOT included. DRAWBAR THREAD SIZE5/8x11UNC. SHANK THREAD SIZE7/8-20.