Home / Milling / Mill Tooling / Boring Head, 45 Taper, Diameter 4″, 1″ Boring Bars View cart “Boring Head, Straight Shank 1″, Diameter 2-1/2″, Erickson Tenthset” has been added to your cart. Boring Head, 45 Taper, Diameter 4″, 1″ Boring Bars$200.00 1 in stock Add to cart Category: Mill Tooling Description Description Yuasa 45 Taper Quick Change Boring Head, Takes 1″ Boring Bars Related products Boring Head, R-8, Diameter 2-1/2″, 1/2″ Bars Everede $149.00 Add to cart Collet Chuck, Brown & Sharpe #9, B &S Uses Z Collets $49.00 Add to cart Boring Head, Straight Shank 5/8″, No Name $29.00 Add to cart Boring Head, Straight Shank 3/4″, Diameter 3″ $29.00 Add to cart