STURDY AND DURABLEThese gauge blocks made of solid aluminum alloy with anodized surface are corrosion-resistant and wear-resistant, which can better protect your router and saw.DURABLE AND EASY TO READEach adjustment block is equipped with an engraved scale for easy selection of the appropriate size, ensuring accurate and reliable measurements. Equipped with a storage box, these aluminum alloy adjustment blocks can be well stored, convenient for sorting and provide stricter protection.VARIOUS SPECIFICATIONSThe height measuring tool set includes 9 height measuring blocks of different specifications, which can be used alone or in combination to obtain different measurements. (1mm, 2mm, 4mm, 6.5mm, 8mm, 16mm, 18mm, 32mm, 25x50x100mm)WIDE MEASURING RANGE, HIGH PRECISIONWith these adjustment blocks, it only takes a short time to adjust the fence height, blade position and other tools, which is convenient and practical.