Specification Brand : Psytfei BulletPoint1 : ALUMINUM ALLOY MATERIAL: The stair gauge is made of premium aluminum alloy with anodized surface, which is stable . BulletPoint2 : HEX FLAT DESIGN: More suitable for edges rather than circles, with a higher body that makes the ruler completely perpendicular to the material, ensuring very stable and accurate clamping of the workpiece. BulletPoint3 : THUMB SCREWS: Framing jig is equipped with black oxidized steel thumb screws, which are anti slip , easy to grip and tighten to any raft frame, and can be easily carried even when wearing gloves. BulletPoint4 : FRAME SQUARE ATTACHMENT: Stair instrument knob for circular saw, layout of stair string, use carpentry square to mark repeated angles, and use carpentry square to guide saw for angle cutting. BulletPoint5 : EASY TO USE: Small size and being lightweight make the frame jigs easy to use, easy to carry and move to meet different use needs. Color : Red ItemName : Stair Gauge Aluminum Alloy Framing Square Stops Hex Flat Framing Jig with Thumb Screw for Stair Layout Woodworking Stair Gauge Knob ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 11 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : carpentry-squares Manufacturer : Psytfei Material : Aluminum MeasurementAccuracy : 1 ModelName : Psytfeibgc9se0rga ModelNumber : Psytfeibgc9se0rga NumberOfItems : 1 NumberOfLithiumMetalCells : 1 PartNumber : Psytfeibgc9se0rga ProductDescription :