[Material]: This product is made of CNC precision-machined anodized aluminum alloy. Enjoys Durability, Resistance, High Hardness, and Wear Resistance. design ensures comfortable use even during prolonged handheld operations, minimizing tiredness [Design]: The hexagonal flat design perfectly aligns with material surfaces at various angles, ensuring verticality and measurement accuracy. Equipped with a large blue non-slip thumbscrew, easy rotation for tightening and adjustments. Each set also comes with a holder and carabiner for easy portability, improving your work efficiency [Function]: This tool integrates a square framing attachment, a stair measurement gauge knobs specifically designed for circular saws, and capabilities for stairway stringer Layout structures. Quickly replicate angles using preset woodworking square markings and achieve precise angular cuts with the integrated guide mechanism Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Blue Material:Aluminum Alloy Package Contents: 2 x Tall Stair Gauges with Holder 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.