1. SETUP BAR SPECIFICATION: Sizes include 1/8', 3/16', 1/4', 5/16', 3/8', 7/16', and 1/2'. All setup blocks are 5.91 inches long. Available angles are 22.5°, 30°, 45°, 60°, 70°, 80°, and 90°. 2. MATERIAL: These precision adjustment blocks are made of quality industrialgrade aluminum alloy, ensuring hardness, lightweight, and ease of use. The anodized orange finish provides craftsmanship and durability. Laserengraved scales enable quick work and measurement without fading. 3. 4 GAUGES IN 1: This setup bar set functions as a square stacking gauge, angle gauge, height gauge, and depth gauge. It combines the features of traditional depth and height gauges with building blocks, offering multiple uses in one set. 4. EASY TO USE AND CARRY: The router table construction blocks set includes a wire rope loop to keep the setup bars connected and organized for easy access. The set comes in a spongelined plastic box for safe storage and transportation.