This is a router bit holder that supports both 1 / 2 inch and 1 / 4 inch router bit shanks.
You need to drill a 5/8 inch hole about 3 / 4 of an inch deep for the router bit holder to fit in.
The picture with the router bits shows the custom holder (in red) and a commercial version (in blue) from Rockler.
Comment & Rating (0)