This attachment fits onto your Dremel or similar hobby tool and extends the working length by 38mm.
ONLY use the original Dremel nut. Do not try to fit any other attachment that screws on, including Nibbler Maxi and Mega.
You can use your existing spanner to tighten and remove.
There are two different thread sizes on most rotary hobby tools. There is an imperial size, which fits Dremel and similar, and there is a metric size which fits Ozito, Intertec and similar.
This Nibbler Extender is the IMPERIAL version, for use with Dremel and similar tools.