Bearing lock ring, Norton hubs 1933? to pre Commando ea

Wheel bearing locking ring, suit front and rear wheels for all Nortons from 1932 to 1954 and front wheel from 1955 to 1967?. One required for each wheel
Original Part Numbers:
3742; A2/440;  E6888; 067615; 06-7615 - Hub bearing lock ring (plain side) 1 5/8 x 26TPI