Home / Milling / Mill Tooling / Boring Head, 30 NMTB, Diameter 3-1/2″, Enco View cart “Quick Change Set,R-8, Enco Item # L5708” has been added to your cart. Boring Head, 30 NMTB, Diameter 3-1/2″, Enco$249.00 1 in stock Add to cart Category: Mill Tooling Description Description Enco 3-1/2″ Boring Head w/ 30 NMTB Shank, Takes 3/4″ Boring Bars Related products Boring Head, Straight Shank 1-1/2″, Diameter 2″, Criterion L62215S $149.00 Add to cart Collet Chuck, 40 NMTB, Collets B & S 21 Brown & Sharpe $195.00 Add to cart Boring Head, Staight Shank 1″, Diameter 1-3/4″, Erickson Tenthset (B) $75.00 Add to cart Boring Head, R-8, Bridgeport, Diameter 3″, 5/8″ Bars Item # L61043A $149.00 Add to cart