Home / Milling / Mill Tooling / Boring Head, R-8, Diameter 4″, 3/4″ Bars, Flynn 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″, 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, Bridgeport, Diameter 3″, 5/8″ Bars Item # L61043A $149.00 Add to cart Boring Head, Straight Shank 3/4″, Diameter 3″ $29.00 Add to cart Collet Chuck, 40 NMTB, Collets B & S 21 Brown & Sharpe $195.00 Add to cart