This arm is designed to fit the Lucas DVX6A DVXH6A DX6A DXH6A DMB6 DMBZ6 clockwise-rotating distributors. To Fit: Lucas DVX6A, DVXH6, DX6A, DXH6A DMB6, DMBZ6 Clockwise-Rotating Distributors. Fitted with a steel spring clip for an extra secure fit, this rotor arm really is the finishing touch to your ignition upgrade.