If you want to use threaded Screw-In points, our shafts must be equipped with the right insert. This acts as a support to the points making replacing them very easy and fast.
Installation takes place by gluing the insert into the rod so it must respect the diameters dictated by the different plugs.
To explain how an insert is constructed, we can "divide" it into three fundamental components:
Stem diameter, fundamental for the choice of the shaft in which to insert it and which is made with grooves or crossed knurling for the glue.
Collar diameter, which varies according to the spines of the shaft and acts as a support for the point. It also has a bevel which is the place of the O-Ring when Screw-in points with OR are used.
Internal thread, which is standard 8/32” UNC, where all Screw-In tips can be threaded.
All our inserts are made of aluminium to reduce the influence of the material on the possible weight to the minimum.