Shim Washer Kit-W300, Use these shim washers to fine adjust the spacing on any arbor or assembly with a 5/16 diameter arbor (Slot Cutters, Stile & Rail, Window Sash, Tongue & Groove).
Washers are 5/16 I.D. x 1/2 O.D. Includes three each of the following thicknesses: .004, .006, .008, .010, .012.

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