Ronstan Track - Series 19 - Luff Groove Profile hi tek - Say goodbye to yellowing

- Say goodbye to yellowing with this non-yellowing formula

Planetary NFB mechanism to lockout prop feed back

72 Heavy Duty Diesel

Universal Bearing -

3 bolts are used and the other 3 are not (for proper indexing of wheel)

Ronstan Track - Series 19 - Luff Groove Profile hi tek - Say goodbye to yellowingPatented system uses low profile cars running on twin races of acetal ball bearings. Cars use the existing luff groove of the mast (no track or installation work required). Ball bearings are captive for easy loading and unloading of cars from mast. They can be easily switched between fully battened and soft luff mainsails. Minimum distance from mast to mainsail luff enhances mainsail efficiency. With a complete range of car profiles and feet there is