High Accuracy Measurement: Each metal block in this woodworking set is carefully made to within 0.001 inch tolerance, with 15 different sizes from 1 / 16 to 3 inches for various router table and cutting machine uses in workshops Multi Tool Application: Important for accurate tool height adjustments on cutting tables, router platforms, band machines, drilling equipment, and shaping tools, significantly improving setup efficiency in both professional and hobbyist woodworking projects Strong Anodized Construction: Made from robust metal alloy with finished coating for extended use, resistance to damage, and tool care, featuring permanent engraved labels that stay visible Handy Storage Container: Comes with a compact case to keep all 15 setting blocks organized and secure during transport, allowing quick access and easy height changes for fences and cutter heads Versatile Arrangement Approach: Includes 15 anodized metal setting blocks that can be placed in many combinations, providing flexible measurement choices for router bit heights, adjustments, and tool setups, Manufacturer: YUEHUINIAO