Check the listing for details. NICE! CRITERION 1/2" BORING HEAD w/ CAT40 SHANK - #DBL-202. Condition: Used. Listed at 272.79 USD. This is a 1/2" Boring Head w/ CAT40 Shank. Shank: CAT40. Made in the U.S.A. by Criterion. Cross Hole Capacity: 1/2". Capacity: 1/2". Distance Between Hole Centers: 5/8". Head Length: 2-7/16".