In Need of Assistance

Team 234, CyberBlue, is asking for your help. We currently are wanting to know the weight(in pounds) of as many different sprockets as possible. Just whatever you have laying around in your shop. We’re running low on material and need to know some weights. The information we’d need to know is: Weight(in pounds), what material the sprocket is made out of(plastic, steel, etc.), whether the sprocket has a hub or not, whether the sprocket is for #25 or #35 chain, and last, the amount of teeth the sprocket has. Any sort of help would be very appreciated. You can reply in the thread, PM me, or send me an email at Thanks in advance. :]