Hey guys i have a neck developer but where can i find the weight for it? Any tips or websites?

Where did you get the developer??

If u get the neck harness, u can use any free weights on it, like the weights u put on benchpress etc.

Go to a local sports store to find some.
Warden11, u can get a neck harness from a local sporting goods store, www.titleboxing.com, or www.ringside.com