Rear hub spindle distance piece (wheel spacer) , off / plain side. Suits all Nortons 1936 to 1955 with steel hub in rear wheel. Used front and rear 1934 to 1946. Original part number: 9516; A2/461 - Hub spindle distance piece, plain side; Rear hub spindle distance piece, plain side (1947 on - speedo drive in rear wheel)