Made from U section extruded aluminium with cast head and foot. This aluminium sash clamp is ideal for holding items in place while glue sets, with a 840mm clamping capacity, it's perfect for large objects such as door frames, kitchen counters or windows. This lightweight clamp features an extruded aluminium U-section and a cast head and foot, making it durable and long-lasting. To use, simply slide the foot to the correct length and secure it firmly. It has an extruded aluminium U section with cast head and foot, an 840mm clamping capacity, is lightweight and easy to use and secure.