Kennedy 10mm MAG Plain Heavy Duty Fitment Fitted as standard to KEN-333-2100K & KEN-333-2030K. To suit 1/4" I?D lug, stem/spigot dia 1/8", 1/4", 5/16" and 3/8". Column: 12mm x 175mm. Cross Bar: 10mm x 165mm. Threaded: M8 x 1.25mm. GBP 10.39 1