[Modular Design for Flexibility] - This stair measuring jig includes three extension parts: 16 inches (A), 12 inches (B), and 8 inches (C). These can be combined as needed, providing a measurement range from 16.2 inches up to 60.1 inches, offering versatile adaptability for various tasks. [Perfect for Multiple Woodworking Projects] - Ideal for installing wooden floors, building stair treads, or measuring closets and windowsills. Its broad functionality makes it a valuable tool for both amateur woodworkers and professionals. [Compact and Gift-Ready Storage] - The jig comes with a storage bag to keep components organized and prevent loss of small parts. Its compact and neat design also makes it a thoughtful gift for woodworking enthusiasts. Color: As Shown Material: Aluminum Alloy Note: Product appearance and printed text may vary slightly between batches, but this does not affect performance. Light reflection and differences in display screens may cause slight variations in color. Measurement error allowance is +/- 1-3 cm. Package Contents: 1 x Stair Measuring Jig Kit Only the items listed above are included.