Whiteside Brass Bar Set-Up Kit 4 in. is a precision tool designed to help woodworkers and craftsmen achieve accurate measurements for depth of cut, bit height, fence, and blade distance. This versatile 5-piece set includes brass bars that can be used individually or stacked together to combine measurements, ensuring flexibility and precision in your setup process. Each bar is carefully machined to prevent damage to your tool edges and comes in five different sizes: 1/8", 3/16", 1/4", 3/8", and 1/2" square, all measuring 4 inches long. Crafted by Whiteside Machine Company in Claremont, North Carolina, this set is an essential addition to any workshop looking for reliable and durable setup tools. Model Number: 9810