W.M. Berg manufactures Ultra Precision cross roller lead screw driven slides with rails and rollers from hardened and ground tool steel, top carriage from clear anodized aluminum or close grain cast iron and retainers made of brass. We can also manufacture the lead screw driven slides from other materials, depending on your application and your needs. We offer a large selection of different sizes and lengths and will custom create additional lengths or sizes and mounting solutions to accommodate your needs.