Home / Milling / Mill Tooling / Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Criterion L624R8 Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Criterion L624R8$349.00 SKU: L624R8 Category: Mill Tooling Description Description Criterion 4″ Boring Head, 1″ Boring Bars, R-8 Shank, DBL-204 Related products Boring Head, Morse Taper #3, Diameter 3-1/2″, Enco, Item # L63035 $249.00 Read more Arbor, Boring Head, 30 NMTB 1-1/2″ 18TPI $30.00 Read more Holder, End Mill, Quick Change, Yuasa, Set of 3 $75.00 Read more Arbor, Horizontal Milling, 30 NMTB, 1″ x 1/4″ Key, Beaver Tool (C) $149.00 Read more