Home / Milling / Mill Tooling / Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Critereion L624R8 View cart “Universal Kwik Switch II 300 Series Tool Holders End Mill Holders MT2, End Mill Holders, 1″” has been added to your cart. Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Critereion L624R8$349.00 1 in stock Add to cart SKU: L624R8 Category: Mill Tooling Description Description Criterion 4″ Boring Head, 1″ Boring Bars, R-8 Shank, DBL-204 Related products Boring Head, Straight Shank 1″, Takes Y Collets, Universal $49.00 Add to cart Boring Head, Morse Taper #4, Precision Universal Automatic Item #L6305 $295.00 Add to cart Collet Chuck, 40 NMTB, Collets B & S 21 Brown & Sharpe $195.00 Add to cart Boring Head, R-8, Diameter 2-1/2″, 1/2″ Bars Everede $149.00 Add to cart