Navy anchors 1.flukes to dig in and hold firmly in sand and mud 2.size:5lb, 10lb, 15lb, 20lb,28lb ... .pack:carton, metal cage The characteristics of navy anchor:∴ Gray cast iron∴ Available coated with aluminum-painted finish, PE coated or ... , 10LB, 15LB, 20LB,28LB PVC coated: 10LB, 15LB, 20LB, 28LB Cast Navy anchor