Vestil AKST Adjustable Machinery Skates, models ASKT-6, ASKT-12, & ASKT-24 are designed to transport heavy machines and equipment along a straight line. Machine skate includes two dollies connected by a slider bar that allows the user to adjust the overall dolly length. Top of skate features a rubber surface for additional grip. Nylon wheels are non-marking (except model ASKT-24 has steel wheels). Vestil ASKT machine skates are constructed of all steel for years of reliable service.