Nice to see ya got the Lenox Bits. I used the Hitachi ones that Lowes sells on thier web site...The package said 5/8...but they were actualy about 1/16 of an inch smaller then they were supposed to be. Lowes was nice in exchanging them though for the Lenox ones. I then had to use a diamond grinder to carve out the the holes to the right size. The puddy methode works good for holding the water there till ya start breaking throught the other side....luckly i had an understanding wife to hold the garden hose in mine...lol. Looks like ya did good though.