Simple And Efficient: For use with 5/16-inch fiber cement siding. Adjustable in 1/4-inch increments for 4- to 8-inch siding reveals with hands-free nailing. This feature ensures perfect equal spacing between each boardFiber Cement Siding Tool:The siding tools can help to make your next siding project easier and more productive. It's designed so that the siding stays level and spaced out enough as it works its way up the wall, perfectly leveling and spacing out your sidingQuality Materials: The siding mounting kit is made of plastic.Quick Start: This siding installation tool allows for easy and accurate installation of siding. STEP 1: Adjust siding display size as needed. : Slide and clamp the tool over each layer of siding. STEP 3: Measure over the top of the tool and support layer of siding. Repeat the above stepsImportant: Siding gauge don't over-tighten handle, over-tightening handle may cause tool to pull away from sidingPlease note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Colour: GreenMaterial:plasticPackage Contents:2pcs Siding gaugeOnly 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.