Building my First Balun

Sometime ago I bought some simple balun kits from Ebay. These are very inexpensive (~$10) and are designed to run no more than about 200W. They are from China so the instructions are sparse. I am wiring this as a 1:1 current balun to use in a quarter wave 20m vertical I am going to build to test against the end feds.I have the radial plate ready for this and just need to cut the radiator wire to length.I’ll only need 16 ft or so of mast to support it. Here is a view of the balun being built: