1/2″ shank to 5/8″-11 male thread.
All in one drill guide system Simple and easy to use Prevents run-away etching and burning Prevents cracking upon breakout Self lubricating Works with any brands of coring bits.
Sure-Guide 4 Pcs Variety Pack 1″,1-1/4″, 1-3/8″, 1-1/2″
Strong 4?Ç¥ suction cup, holds drill in place. 1/4?Ç¥, 5/16?Ç¥, 1/2?Ç¥, 3/8?Ç¥drill bit hole guide. Adjustable hole saw guide up to 3-3/8?Ç¥.
Small ring for faucet opening holes up to 1-1/2″. Large ring for sink opening holes up 3″. Instantly creates a water dam to cool core bits while drilling holes. Set consists of one each 1-1/2″ & 3″.