Everyone has agonized for hours over a small purchase then after making a decision, and using it we wish we had picked the alternate selection. I got you covered. If your want to step up or down for the router arbor look no further. I can supply either 1/4 and 1/2 inch arbors for use with my custom cutter. The overall length for the 1/4 inch arbor is about 2 3/4 inches and for the 1/2 inch arbor is 3 3/8 inch. The bearing arbor is about 1 3/16 inch long for both.
These are Whiteside router arbors made right here in the USA.