For use with COLT Maxicut RotaStop most forstner bits. Allows extension up to an extra 270mm. This patented system allows the forstner bit to lock into the extension with a slight twist. And with a slight twist the other way your bit is unlocked. Simple and effective.
The extension can also be used with the Maxicut Morse taper adaptor for use with woodturning lathes.
Note: The MaxiCut Rotastop extension only fits those forstner bits with a 10mm diameter shank (13mm - 60mm). The larger size forstner bits have a 13mm shank and will not fit into the extension. The extension will not fit 65mm, 68mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm forstner bits.