these mount to YOUR 5/8 11 mandrel / starter bit as all these are are the hole saws as seen in photos

shipping is showing me $5 to $6 so I will make it where you only have to pay the $6 bucks once no matter how many you purchase 

I am activating the listing to save you 10% if you order two, save you 15% if you order three, and save you 20% if you order four or more!!  If you are a contractor this is your chance to save BIG.