- Durable aluminum construction: 15 pieces with a solid anodized aluminum structure to protect cutters and saws. Built for long life and can be used individually or together. - High precision: gauge blocks are precision engraved for easy reading and accurate setup. Set up the table saw quickly without guessing or measuring. - Multiple sizes: all end blocks are 2.75 inches long. Sizes include 1/16, 3/32, 1/8, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, 7/16, 15/32, 1/2, 23/32, 3/4, 1x2x3. Choose the right end block for different work needs. - Easy to use: with 15 solid aluminum height gauges in different sizes, you can easily adjust the height of the fence and cutter to match requirements, faster and more accurate than a combined ruler. Use scenarios - Set up precise fence height for table saw operations such as dado cuts, rabbets, or edge joinery. - Align router table fences or edge guides for repeatable, accurate cuts. - Create quick height stops for consistent thickness in trimming, resizing, or finishing tasks.