4 in. diamond core bit glass tile mirror ceramic slate Start Price USD 70.00 Current Price USD 70.00 Time Left - Bid Count 0 Buy It Now Price - Reserve Price - Start Time Thursday, November 13, 2008 End Time Saturday, December 13, 2008 Location Plymouth, NC See more about ' 4 in. diamond core bit glass tile mirror ceramic slate' Description This is a new 4" diamond core drill bit. Perfect for drilling holes in glass, slate or tiles. Great for stained glass work. Place a Bid!