OK hands up dumb question does this type of boring tool need grinding to shape or are thay good to go out the box ?
http://www.ebay.co.uk/itm/NEW-9-PCS...442487?hash=item2a7f4df777:g:sisAAOSwHQ9Wa9xJ
http://www.ebay.co.uk/itm/NEW-9-PCS...442487?hash=item2a7f4df777:g:sisAAOSwHQ9Wa9xJ