Home / Milling / Mill Tooling / Boring Head, R-8, Diameter 4″, 3/4″ Bars, Flynn View cart “Boring Head, Straight Shank 3/4″, Diameter 3″” has been added to your cart. Boring Head, R-8, Diameter 4″, 3/4″ Bars, Flynn$225.00 1 in stock Add to cart Category: Mill Tooling Description Description Flynn 4″ Boring Head, R-8 Shank, Takes 3/4″ Boring Bars Related products Boring Head, Straight Shank 1″, Takes Y Collets, Universal $49.00 Add to cart Boring Head, R-8, Diameter 2-1/2″, 1/2″ Bars Everede $149.00 Add to cart Quick Change Tooling, R-8, Narex $99.00 Add to cart Boring Head, Staight Shank 1″, Diameter 1-3/4″, Erickson Tenthset (B) $75.00 Add to cart