TRX® equipment is nothing if not flexible and versatile. Take these TRX Castors for example. Easily affix them to each leg of your TRX S-Frame in seconds and wheel it anywhere indoors or out. Pushing the handle down engages the heavy-duty, non-marking wheels. Once in the desired position, simply lift the handle up to lower the S-Frame to the floor. Made of powder-coated commercial grade steel and equipped with padded vinyl grips. Set includes four TRX Castors (one for each leg) and can be used with any S-Frame.