Home / Milling / Mill Tooling / Boring Head, Morse Taper #4, Diameter 4-1/2″, 1″ Bars View cart “Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Critereion L624R8” has been added to your cart. Boring Head, Morse Taper #4, Diameter 4-1/2″, 1″ Bars$49.00 1 in stock Add to cart Category: Mill Tooling Description Description 4-1/2″ Boring Head Boring Head, Morse Taper #4 Shank w/ Tang, Takes 1″ Boring Bars Related products Arbor, Boring Head, 30 NMTB 1-1/2″ 18TPI $30.00 Add to cart Collet Chuck, 40 NMTB, Collets B & S 21 Brown & Sharpe $195.00 Add to cart Boring Head, Straight Shank 3/4″, Diameter 3″ $29.00 Add to cart Boring Head, Straight Shank, 2-1/4″ Diameter, Lincoln Machine Specialty $49.00 Add to cart