Accurate Stair Stringer Layout This stair gauges knobs tool is specially designed for stair stringer layout on framing squares. It helps you quickly transfer consistent measurements and angles, reducing calculation errors and ensuring accurate and repeatable cuts. Complete Tool Set with Holder Carabiner Includes a practical holder and carabiner so you can easily clip the stair gauge set to your tool belt, bag, or workbench. This convenient storage solution keeps your layout gauges organized, visible, and always within reach on the jobsite. Durable Stair Stringer Layout Knobs The stair stringer layout knobs are made to withstand regular use in carpentry and construction environments. They offer a secure grip and reliable locking force on your framing square, preventing slipping during marking and cutting. Color: Blue Material: Metal Package Contents: 1 set Stair Gauge 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.