What should I do?

[xveganxcowboyx]

IF you can contact him, he should be driving down to meet you and give the kit back. Then just make sure everyone knows he's a f*cking liar.

If not, he owe's you the kit for sure. Show up at his house and ask for it or your asking price for it. He'll probably give it back. Also, collect gas money or keep the wrench (breaker bar), because he owe's you something for the trouble.

Failing any of those more reasonable solutions, kick the crap out of him. Leave his property alone though.