Description: Heavy duty marine grade cast 304 stainless steel construction. 5 spoke Boat Steering Wheel. 3/4" shaft with notch tapered keyway. 13 1/2" diameter x 3 3/8" deep. Polished to a bright mirror finish, Control Knob included. Maximum corrosion resistance and durability in the saltwater environment Includes black plastic center cap. Package Includes: 1 Piece Boat Steering Wheel