Feature:1. Aluminum Alloy Material: The stair tread jig is made of excellent aluminum alloy, the face is anodized to avoid discoloration in high temperature environment.2. Reusable: The screws in the stair tread jig template kit are not easy to break, reusable. And easy to carry to anyplace you want.3. Combine and Stretch: The joints of the stair tread jig template kit can be combined and stretched at will, and its length can be slid in the range of 11 to 60 inches.4. Simultaneous Measurement: The stair tread template tool can measure the length and width of the panels at the same time, so that all panels conform to the same specifications.5. Two Side Scales: The stair tread template tool has two side scales measuring 10 inches, making it suitable for home and office buildings.Specification:Item Type: Stair Tread JigMaterial: Aluminum AlloyColor: RedMeasuring Range: 11-60inApplication: Stair Tread Measuring Tool Can Be Used To Cut And Measure Stairs, Risers, Shelves, Window Sills, Closets And Some Angular Layouts..Package List:2 x Measuring Template2 x A16in Tie Rod2 x B12in Tie Rod2 x C8in Tie Rod10 x M5 Screws10 x M5 Knob1 x Washer