Iron Rock
3 1/2" Dry Core Bit
3 1/2" dry core bit for drilling through brick, concrete block, cement block, and light reinforced concrete. 3 1/2 inch dry core bit has 5/8"-11 standard threads for a hand held tools vented 10-inch steel barrel, and premium turbo segments laser-welded for fast low-cost drilling. 3 1/2“ dry turbo core bit is 10” long, 3 1/2" in diameter and has a 9 ¼” cutting depth.
