Multiple Size Combination: This stair measuring ruler set provides a versatile combination of three different lengths of extensions: 16 inches, 12 inches, and 8 inches. You can flexibly mix and match these components to suit your specific needs. Premise Measuring: Our stair measuring tool can be used for stair projects, various woodworking and home improvement tasks. It is flexible and multifunctional, suitable for wood, metal and plastic. It is easy to use, precise to measure and cut. Efficient Design: This stair tread gauge uses an efficient design to streamline workflow and speed up project progress, saving time costs. It uses a user-friendly design to help you complete preparation work quickly and worry-free, and complete tasks quickly and efficiently. Premium Aluminum Alloy Material: This stair tread template tool is made of premium aluminum alloy material, which is enduring and can withstand heavy use. Easy to Carry: This product adopts compact size and lightweight, easy to transport and store. You can carry it to different job site and it can make you always have the right tool for stair cutting project Sturdy Construction: Our stair measuring ruler has sturdy construction and long service life, making it a reliable addition to your toolkit. It is suitable for stair cutting project. Enduring: This stair measuring tool is enduring and can serve you for a long time. It is flexible to use and suitable for a variety of woodworking and home improvement tasks. Product Name: Stair Measuring Ruler Set Measuring range 11-60 inches Colour:Red Material:Aluminum Alloy Package Contents: 1 set * Stair Measuring Ruler 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.