small plastic round drive belt material:nylon,pom size:29*5.8H*3.9 bore,diameter:29mm color:red colour as your reply ISO9001 small plastic round drive beltmaterial:nylon,pomsize:29*5.8H*3.9 bore,diameter:29mmcolor:red colour as your replyISO9001moq:5000pcsOEM: accept small plastic round drive belt