Features of Sprocket: 1) Material: 6061 2) Item: 219#, 215# 3) Thickness: 4mm 4) Teeth size: 219# from T 63-93, 215# from T82-99 5) Main color: Golden, Silver, Rose red 6) Heat treatment: Anodic treatment 7) Net weight: 210g (Take T80 for example) 8) Packing: 50pcs/Carton Features of Sprocket: 1) High accuracy on working procedure 2) High hardness 3) Smooth surface 4) No burr 5) Small order are accepted 6) Competitive price 7) Prompt delivery Something of us: We are a strong manufacturer of machinery in Ningbo, Zhejiang where the main import and export market in China. Goods on kart parts are our top and king proudction. It is no necessary for you to worried about that we can not finish your order after you ordering to us within the delivery time, as for we have professional production team, effective management, strict working procedure testing and excellent automatic data control machines. Above all, "good quality, prompt delivery" are our production purpose, so belive us, belive yourself