since I bought quite a bit of ww the last couple months, thought I'd share a little advice from the mistakes I've made .

1. make sure you are getting the type of WW you want. there is a difference between Stick on and Clip on. Being able to read the ad helps

2. verify if they are sorted or as picked up from the tire shop. I've gotten some that were all checked with snips to verify no zinc, and some that were dumped out of the tire shop bucket into the box. complete with a mix of clip on, stick on and zinc including a little extra trash.

3. assure they will put in heavy plastic bag, (zip loc doesn't cut it) double boxed and properly taped. some PO employees get a thrill out of dropping these packages from 5 feet to see if the sides will split. (they will) at least 50% of mine came with split sides. Only the ones double boxed and in heavy plastic didn't leak, even if they were split.