Durable Material： Made of stainless steel and aluminum alloy, the stair tread gauge is strong, lightweight, and not easy to rust and corrosion, with a long service life. The surface anodizing process is not easy to fade. Adjustable Length： The joints of the stair tread template tool can be combined and stretched at will, its length can slide from 11.4 inches to 60.7 inches. You can freely combine them according to your needs. High Precision： The stainless steel plates on both sides have newly added clear and accurate scale measurement functions, which can effectively reduce work difficulty and improve work efficiency. Easy To Use： Insert the tool between the two walls, safely stretch and tighten the screws to measure the length and side angles, and then you can use it to measure stairs or risers. Wide Application： The stair tread gauge is widely used for cutting and measuring stair treads, deck floors, wall shelves, window sills, shelves, etc. It is an essential tool for woodworking DIY or woodworking construction workers. Curved Design: Sides adopt a curved design, giving you an adjustable angle, making it easy to operate and adjust to stair tread template set width, providing a perfect layout for stair treads, risers, and shelves. Suitable For Complex Work: Our stair tread template tool can be adapted to more complex measurement work due to its width and angle measurement functions. It can simplify the heavy work and complete the perfect measurement. Easy To Carry: The stair tread template tool can be split into multiple parts, with compact in size and lightweight, easy to put into bags or toolboxes, making it easy to carry outside. Specification: Material: stainless steel, aluminum alloy Color: Blue Measuring range: 11-60 inch/25.4-152.4cm Application: cutting and measuring stair treads, deck floors, wall shelves, window sills, shelves, etc. Packing Included: Scale Plate: 2 pieces (stainless steel) A tie rod (16IN): 2 pieces (aluminum alloy) B tie rod (12IN): 2 pieces (aluminum alloy) C tie rod (8IN): 2 pieces (aluminum alloy) M5 Screw: 10 pieces (stainless steel) M5 Star Knob: 10 pieces (bakelite)