Check the listing for details. CRITERION 3/4" BORING HEAD w/ 1-1/4" SHANK - #DBL-203. Condition: Used. Listed at 295.74 USD. Made in the U.S.A. by Criterion. This is a 3/4" Boring Head w/ 1-1/4" Shank. Shank: 1-1/4". Cross Hole Capacity: 3/4". Capacity: 3/4". Distance Between Hole Centers: 15/16". Head Length: 3-3/16".