This kit features a 12.5 magnetic top, and 10.5 bottom that measures 2.60
This kit will work with my Jr 12.5 tops, it will NOT work with the standard JR cast bottom, it is not long enough.
Please leave a message in the comments at check out if you plan to use this with a label cast/ wood set you are also purchasing, so I can make sure your wood is long enough for this kit.