Dimensions are engraved on the gauge blocks for easy reading, making it easy to set the height of fences, routers, saw blades and other knives as desired.Setting blocks come in a of sizes including 1x2x3in, 1/16in, 3/32in, 1/8in, 5/32in, 3/16in, 7/32in, 1/4in, 5/16in, 3/8in, 7/16in , 15/32in, 1/2in, 23/32in, 3/4inThe height gauge set is designed with anodized soft aluminum, which prevents damage to the milling cutter or saw blade during installation, and is reliable to useThe mounting block gauge set is made of high-quality aluminum alloy material, which is anti-rust, wear-resistant, high hardness and not easy to damageFeatures an organized and compact storage box to nothing gets lost during transport or use, and these blocks are easy to store and portableColour:blackMaterial:aluminum alloySize:25 x 15 x 5cmPackage Contents:15 x setting block1 x storage boxOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.