Sale is for crossover and matching transformers removed from Jensen JHP 52 and JAP60 speakers. I disassembled many of these speakers to obtain Q4 PM tweeters, which sound great. One of transformers is T102 ST834 assembly to match 250 or 500 ohms to 16 ohm load (speaker). There are other matching transformers 600:16 ohm, wire, and crossover parts in this lot. Weight 6LBS.