The wheel's axle is used for
balancing, so there's no need to make or buy
separate balancing equipment to hold the wheel. It
adjusts horizontally for various wheel widths, and
the vertical adjustment allows this balancer to work
with axles of two diameters.
Those
are four sealed ABEC-7 bearings
TIG welded in the good
ole' USA.
Designed to be portable.
Built to last a lifetime.