SSP: £27.50
Part No: X-OS45810300
OS Engine 1/4-M5 Locknut Set
An O.S. Safety Propeller Locknut assembly prevents the propeller from being thrown - even if it becomes loose in operation. Particularly suitable for medium to larger four strokes and essential for engines that are prone to kicking the prop free due to a backfire. Supplied as standard with all O.S. four strokes from .70 cu.in. capacity and up.