Features: These stainless steel siding installation tool ensures adjustable reveals and easy nailing for fiber cements boards, enabling spacing and operations with siding tool lap siding gauges efficiency. Stainless steel construction with rubber padded locking grip prevents damage while securely clamping boards, featuring reveal indicators for instants adjustments. Ideal for contractors and DIYers installing fiber cements siding in residential/commercial projects, particularly valuable for worker needing fiber cements siding tool without assistants. During exteriors renovations when mounting 5/16 boards vertically or horizontally, maintaining consistent reveals across wall/soffits using the integrated siding mounting set alignment systems. Double tool set doubles productivity by simultaneously securing upper/lower board courses, with etched measurement scales ensuring 0.5mm accuracy for professional installations. Specifications: Component: Stainless Steel Size: 21.1cm/8.31inch Package Includes: 2pcs Siding Installation Tool note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.