Home / Milling / Mill Tooling / Boring Heads / Boring Head, 1″ Straight Shank, 3″, Criterion Boring Head, 1″ Straight Shank, 3″, Criterion$149.00 Category: Boring Heads Description Description Criterion 3″ Square Head Boring Head w/ 1″ Straight Shank takes 1″ Boring Bars Related products Boring Head, 1/2″ Straight Shank, Diameter 2 1/2″, Everede $75.00 Read more Boring Head, Unknown Shank, Diameter 3″ $125.00 Read more Boring Head, Straight Shank 5/8″, 1-7/8″ Diameter $59.00 Read more Boring Head, R-8, Bridgeport, Diameter 3″, Bad Shank Item # L61043C $95.00 Read more