Usage Tips:UNMATCHED PRECISION: The each setup block has a different thickness in the 14pcs gauge block set. The thickness, height, and depth of each gauge are the same size. It can measure fixed depths, heights, or stack them by their thickness for a wide variation or sizes. Very flexible and practical. The gauge blocks can be used individually, stacked, there are hundreds of combinations, enough to meet your different needs. FLEXIBLE AND PRACTICAL 4-IN-1 SETUP BLOCK: The thickness, height, and depth of each size of the gauge bars are the same dimensions. The gauge blocks can be used individually to measure fixed depths, heights, and thicknesses, or they can be stacked for hundreds of combinations to meet your different needs. CLEAR MARKING EASY TO READ: This 14pcs setup blocks are designed with unique brighter color and white laser carving labels on three sides. The clear writing never fades and is super easy to read, perfect for table saws, routers, and other cutting machines. STURDY & : These solid aluminum-alloy gauge blocks with CNC anodized protect router bits and saws better. The aluminum alloy makes them lighter, , and corrosion resistant. Laser engraved mark 't fade with time. These setup bars come with a handy storage case, keeping them organized and neat. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:Red Material:Aluminum alloy Package Contents: 1 * The router table gauge set(Plastic box styles are random, no specification is accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.