Home / Milling / Mill Tooling / Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Critereion L624R8 View cart “Boring Head, Staight Shank 1″, Diameter 1-3/4″, Erickson Tenthset (C)” has been added to your cart. Boring Head, R-8, Diameter 4″, 1″ Boring Bars, Critereion L624R8$349.00 1 in stock Add to cart SKU: L624R8 Category: Mill Tooling Description Description Criterion 4″ Boring Head, 1″ Boring Bars, R-8 Shank, DBL-204 Related products Boring Head, R-8, Bridgeport, Diameter 3″, Bad Shank Item # L61043C $95.00 Add to cart Collet Chuck, 30 Taper w/ Collet 1/4”, 3/8, 1/2, 5/8, 3/4, 1” by 1/8ths $80.00 Add to cart Boring Head, Straight Shank 1-1/2″, Diameter 2″, Criterion L62215S $149.00 Add to cart Collet Chuck, Brown & Sharpe #9, B &S Uses Z Collets $49.00 Add to cart