Specification Brand : ZJchao BulletPoint1 : [Professional Workmanship] Exquisite and sturdy, this tool is a replacement for worn-out parts. BulletPoint2 : [Non-slip Thumbscrews] Black stainless steel screws provide secure grip, making it easy to attach to any raft frame with or without gloves. BulletPoint3 : [ Aluminum Alloy] Made of high-strength material, anodized for wear and long-lasting performance. BulletPoint4 : [Hexagonal Design Gauges] Ensure accurate and stable clamping, for edges with the gauge block perpendicular to material. BulletPoint5 : [Versatile Use] Ideal for staircase beam design, cross beam layout, and other carpentry projects. Color : Black IncludedComponents : No ItemName : Stair Gauges Knobs Aluminium Alloy Stair Stringer Layout Tool for Framing Square Carpentry Rafter Construction (Black) ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 9 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : carpentry-squares Manufacturer : ZJchao MeasurementAccuracy : 0.1mm ModelName : ZJchaoq9pvnwd0bu ModelNumber : ZJchao2zw86ro7gv-12 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : ZJchao2zw86ro7gv-12 PowerSourceType : ac/dc ProductDescription : [Professional Workmanship] Exquisite and sturdy, this tool is a replacement for worn-out parts. [Non-slip Thumbscrews] Black stainless steel screws provide secure grip, making it easy to attach to any raft frame with or without gloves. [ Aluminum Alloy] Made of high-strength material, anodized for wear and long-lasting performance. [Hexagonal Design Gauges] Ensure accurate and stable clamping, for edges with the gauge block perpendicular to material. [Versatile Use] Ideal for staircase beam design, cross beam layout, and other carpentry projects.