XiXi Shop Stair Tread Template Tool - Contains 2pcs 8inch connecting rods, 2pcs 12inch connecting rods, 2pcs 16inch connecting rods, 2pcs 8inch template head, 10pcs screws, 10pcs knobs. Adjustable Length - The connecting rods can be used separately or combined in different combinations to adjust the length or height from 9inch - 54inch to meet more needs in your projects. Rotational Template Heads - 360 degree rotational tread templates can be adjusted the angle by the screw nuts to fit and measure the regular or irregular shapes of stairs treads. Accurate Measurement - Made of durable and strong stainless steel which is resistant to wear and tear, with clear laser scales on the surface, reducing the risk of error measurements in your projects. Wide Applications - The stair tread gauge is versatile and can be used to measure a wide range of surfaces, including stairs, arches, curves, and more. This versatility makes it an essential tool for anyone working on a renovation or construction project. Material: Stainless steel colour: red Package Contents: 2 x 8inch connecting rods 2 x 12inch connecting rods 2 x 16inch connecting rods 2 x 8inch template head 10 x screws 10 x knobs 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.