adjustable glide feet: 1.Be made of carbon steel or stainless steel. 2.The base can be Nylon or steel as you request. 3.Application:abbreviated apparatus,light duty equipment and nvery systems,packing,work-desk,aluminum structures and so on. 4.A lot of sizes of basses and studs are available,and your drawings are welcome 5.The measure of adjusting leg is up to the customer's requirement.