Features: High-Quality Construction: Our Stair Gauges are made of high-quality aluminum alloy with an anodized surface, offering stability and durability. Perfect Design: Featuring a hexagonal plane design for superior edge alignment. The tall body allows the ruler to be completely perpendicular to the material, ensuring accurate and stable clamping. Also included is a black oxide steel thumbscrew for non-slip, easy tightening. Easy to Carry: Our stair gauges come with an anti-loss holder, making them easy to transport. Never worry about misplacing your essential tool. Multi-Function: These gauges serve multiple purposes. Use them for framing square attachments, guiding saws to make angle cuts, marking repetitive angles on a carpenter's square, or for stair stringer layouts. Professional Tool: A must-have for professional stair builders. They ensure every stair is consistent, providing an accurate framing jig layout every time. Compatibility: These gauges work well with most framing squares, rafter squares, or carpenter squares under 0.315" (8mm) thickness. Please note that they may not currently fit Ruobi smaller plates due to the lip around their plate edges. Specifications: Product Type: Tall Stair Gauges for Framing Square Material: Aluminum Alloy Surface Finish: Anodized Design: Hexagonal Max Square Thickness Compatibility: 0.315" (8mm) Package Size: Approximately 15cm x 10cm x 5cm (Length x Width x Height) Weight: Approximately 250g Optional Color: Blue / Black Package Included: 1 x Tall Stair Gauges (Color as your choice)