Each of Woodpeckers New 3D Setup Blocks gives you a common fractionaldimension in 4 different ways. As a bonus, a common bevel angle is machined into oneend. Each block is machined to thickness at its stated dimension. It has a center cut-out at the same dimension, along with a 1/2 ” wide stepped shoulder and a 5/8″ wideraised “camel’s hump” along its top edge. That gives you four different ways to use theblock as the ultimate feeler gauge. The bevel angle makes table saw beveladjustments as quick and easy as setting a dimension. The set includes 1/8″, 3/16″,1/4″, 5/16″, 3/8″, 7/16″ and 1/2″ blocks plus a wall-mountable Rack-It to store your 3DSetup Blocks within arm’s reach.