The Precision Setup Gauge Blocks Set offers unmatched accuracy for woodworking, metalworking, and other precision tasks. These 15 aluminum alloy blocks come in various sizes. Laser-etched labels ensure easy identification, while their 75mm length allows precise measurements. Whether you?re aligning router bits, adjusting saw blades, or fine-tuning machinery, these gauge blocks simplify the process. Plus, the included fitted case ensures safe storage and easy transport. Elevate your precision work with this versatile set! [Size] Set up gauge blocks are all 75mm long. Block sizes 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 8mm, 10mm, 12.5mm, 16mm, 19mm, 20mm, 25*50mm. Each block features laseretched labels for quick identification. [Durable Material] Made from anodized aluminum alloy for better protection of router bits and saws. [Easy to use] Combine bars to setup hundreds of measurements. Stack them for various sizes or use individually. [Portable] Fitted case included, so the combination square will be more tightly protected during transportation. [Application] Ideal for setting fence heights, blade depths, and other cutter adjustments.