The Ondrives.us LPB-04 Linear Shaft Support is a set of 10 aluminum bearings designed for linear motion systems. Made in the US, these supports are specifically designed for shaft diameters of .250 inches and are suitable for industrial automation and motion control applications. With a height of 0.87 inches, these linear shaft supports provide stability and support for rotating or linear motion systems. Ideal for use with linear bearings and v-belts, these supports offer a reliable solution for various motion control needs.