Introducing the latest product innovation from BAL to meet the needs of RVers: the new BAL "C" Jacks, combining the strength of a leveling jack and the steadiness you get from a stabilizing jack. Designed for use with travel trailers and fifth wheel trailers, there's no comparable product like the "C" Jack. Available in 19 Inch, 22 Inch, 25 Inch, 28 Inch And 31 Inch extension and shipped in a boxed set of two with crank handle. BAL "C" Type Stabilizers are designed to mount to the trailer frame where the crossmember meets the main frame member.