This Concrete Sleeper Jack is a heavy-duty, durable jack that is designed for levelling and supporting concrete sleepers. Constructed from High Grade Steel, it is strong and reliable and has a maximum weight capacity of up to 1,000kg. We reccommened you use this as a temporary tool until you install a solid support under the sleeper. It is easy to install and use, making it a great choice for a wide range of levelling applications. Its adjustable height range of 50mm - 300mm makes it ideal for use with different sleeper sizes. This jack is a durable and versatile choice for any levelling project.