1. Each block has a different height in the 7pcs gauge block set. It can measure fixed depths, heights, or stack them by their thickness for a wide variation or sizes. Very flexible and practical 4. 7pcs miter gauge tool made of aluminum alloy, anodized with a smooth finish can better Safeguard your hands, router bits and table saw 2. 4 gauge in 1. The router table gauge set can be used as a height gauge, a depth gauge, square stack gauge, and an angle gauge. It is a combination of traditional depth and height gauges and traditional building blocks 3. Accurate setup block height gauge set sizes: 1/8Inch, 3/16Inch, 1/4Inch, 5/16Inch, 3/8Inch, 7/16Inch & 1/2Inch. The gauge blocks can be used individually, stacked, there are hundreds of combinations, enough to meet your different needs 5. The woodworking setup blocks with excellent Light beam technology carving labels, Clear never fades, which makes it easy to read., Weight: 0.75177631342 Pounds, Manufacturer: Gishbjka