Features: 1Unique Design: Hexagonal plane design gauges are more suitable for edges rather than circles the gauge block can be completely perpendicular to the material and the clamping of the workpiece is very stable and accurate. 2Thumb Screws: The tall stair gauge comes with black stainless steel thumbscrews that are non slip easy to grab and screw onto any raft frame and easy to transport even with gloves on. 3Precise Material: The stair gauges are made of high strength aluminum alloy with anodized appearance wear resistant sturdy and durable. 4Wide Application: The stair gauge knob tool is mainly used for staircase longitudinal beam design cross beam design etc. Easy to place and use. 5Ideal Replacement: Professional and exquisite workmanship tall stair gauge and is an ideal replacement for old and damaged parts. Specification: Item Type:StairGuagesKnobsMaterial:AluminiumAlloy Package List: 2 xStairGuagesKnobs