Mafell 093753 is an ER16 collet (3 mm).
👉 This is a precision colletthat holds a router bit or cutting tool with a 3 mm shank.
Product: ER16 collet
Size: 3 mm
Code: 093753
Application: FM 1000 series router motors (with ER16 adapter, e.g. 208109)
👉 Put simply:
this is a 3 mm tool collet for the Mafell router.