PRO GRIP CLAMP: Ideal for one-person installation this siding mounting block gauges and support the next course for nailing, with virtually no layout time. Making any job ideal for one-person installation, with more accuracy, and 50% percent faster. SIDING TOOLS: Get your shingle project going with our smart tools. Designed to hold the board at the correct height, these hands-free clips assist with installing 3/8-inch thick Smartside LP siding products with less fatigue and more productivity. LIFTING TOOL: Our gauges can be adjusted at 1/4-inch increments for 4 to 8-inch siding reveals. The patented Friction-Cam mechanism has the superior holding power to fully support 16-foot LP siding lengths, ensuring equal spacing between each board. PROFESSIONAL EQUIPMENT: This gauge block set is safe to use on primed or pre-finished products. Made from durable plastic, the locking grip is made from a rubber material, ensuring that the front face of your siding will not be scratched or damaged., Weight: 1.0 pounds, Manufacturer: General Tools