This is an array of switch tieplates with gauge plates that will allow you to use 16' 6" points and the appropriate tieplates for the switch you are laying. You will also need hook tie plates and adjustable rail braces, both of which are available in my store. This comes with both insulated and non-insulated gauge plates as well as two variations of the plates that go under the heel blocks. These are appropriate for either code 138 or code 125 rails. This can be used for either Proto48 or standard O Scale.