Stainless steel rail clamps for Code 250 rail with Stainless Steel socket screws rated to 170,000 psi holding force. Great for mechanical connections and track alignment. These are designed for direct to rail. However,  since code 250 sliding joiners have a low profile, may ALSO be used when you do not want to remove your  original rail joiner.  Use to join: Llagas Creek, Sunset Valley, Micro Engineering code 250 rail.