Estone 1 Set 3 Blade Nylon Propeller P1.4 Dia 47mm 52mm 55mm 57mm For 3/16 Shaft RC Boat This 3 blade fiber reinforced nylon propeller set is for RC boat There are four props in this set: P1.4X47mm, P1.4X52mm, P1.4X55mm, P1.4X57mm The shaft size for these props are: 3/16" 100% brand new and high quality