Ader Wrist Roller w/ Regular Plates (Black 1 Plate). 1.5" Diameter metal tubing, tough nylon strap w/ chrome weight holder. Heavy duty snap link. One plate is 1.25 Lb. Two plates are 1.25 &2.5 lb. Three plates are 1.25lb 2.5lb and 5lb. Four plates are 1.25lb. 2.5lb, 5lb and 7.5lb. All Plates are 1'' Diameter regular plate. Ships to all 50 States, APO, FPO, and P.O. Box.