[Modular Design for Flexibility] - This stair measuring jig comes with three extension pieces: 16 inches (A), 12 inches (B), and 8 inches (C). You can mix and match them based on your project needs, with a measuring range extending from 16.2 inches all the way up to 60.1 inches. It's a truly adaptable tool for any task. [Perfect for Multiple Woodworking Projects] - Whether you're installing hardwood floors, crafting stair treads, or measuring for cabinets and window frames, this stair jig has you covered. Its wide range of applications makes it a must-have for both hobby woodworkers and professionals. [Compact and Gift-Ready Storage] - This stair tool jig is easy to keep organized. The pouch helps prevent small parts from getting lost, and its sleek design makes it an excellent gift idea for anyone who enjoys woodworking, from dads to DIY enthusiasts. Color: As shown Material: Aluminum alloy Due to different batches, there may be differences in the appearance and printed text of the product, which does not affect use. Package Contents: 1 * Stair Measuring Jig Set 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 +/- 1-3 cm.