Sorry our core bits are 32mm deep only and for use on granite worktops to a depth of 30mm.
Not much good for you.
http://www.*********.com/project3/10.jpg
Our diamond cores are only 32mm deep. Ideal for granite worktops in kitchens but not 15" walls...
http://www.*********.com/toolfair/3.jpg
But if you are looking for decent cutters.
We have nice bits.
http://www.*********.com/toolfair/2.jpg
Worth a look
So is that where cornish wimmin keep theyre pasites!!!!!!!!!!!!!!!!!!!!!!!