Scarva Tools 4 Piece Half Round Hole Cutter Set From  £7.65

Good budget set of hole cutters with a useful range of hole sizes. As expected, these are not as good quality as the cutters that are sold individually for higher prices. They feel a bit less solid and the finish where the blade attaches to the handle is a bit rough. However, they work perfectly well. I use hole cutters regularly for all kinds of pieces and am really pleased to have this set - great value for money.