Home / Milling / Mill Tooling / Boring Heads / Boring Head, 3″, Straight Shank 1-1/2″, Criterion S-3 Boring Head, 3″, Straight Shank 1-1/2″, Criterion S-3$125.00 Category: Boring Heads Description Description Criterion S3 Boring Head, 3″ Square Head, 1.5″ Shank, Uses 1″ Boring Bars, 8 Pounds Related products Boring Head Set, 2″, R-8 (NEW) Import, Item #GE65NBH-202S $119.95 Read more Boring Head, Straight Shank 5/8″, 1-7/8″ Diameter $59.00 Read more Boring Head, Unknown Shank, Diameter 3″ $125.00 Read more Boring Head, 1/2″ Straight Shank, Diameter 2 1/2″, Everede $75.00 Read more