| Stained Glass • Fusing • Mosaics • Classes |
Diamond coated spiral cut bits are designed with speed in mind. The spiral design prevents overheating when drilling holes, even in thick glass.10 sizes, #42 - #70, in handy storage case. Fits FlexShaft, Rotary Tool Set, engravers and Dremels. May require the use of a collet in some rotary tools.