Steel Router Collets, Reducer Bushings, 5/16 I. D., 1/2 O. D., 1-1/4 Overall Length - Whiteside 6401. This particular part has a runout of .001 to .003 inches on longer cuts.
Whiteside Machine is regularly rated as #1 for cut quality and #1 for value by Fine Woodworking magazine.
Whiteside Machine was originally a machine shop, many decades ago. They were machining precision router bodies for a customer. The customer went broke leaving them sitting on the router bodies so they decide to finish them and sell them. This is a real story of courage, resourcefulness, guts and just plain stubbornness.
Decades later they are still stubborn about absolutely top quality and beautiful tools.
*Please note that the above picture is a representation of the type of tool and may not accurately represent the actual size and dimensions.
WARNING: Cancer and Reproductive Harm—www.P65Warnings.ca.gov