No 5 Gooseneck/Vang - Suit Round Masts - For IOM or similar

No 5 Gooseneck/Vang - Standard - 4mm Vang Thread - 60mm High Overall 

Suit Round Masts and SAILSetc Boom Section or Round Booms - For IOM or similar

The black body that fits to the mast is 50mm high and can be cut down to any length.

Use 103g Boom End Fitting for Sailsetc boom - use with 103f to fit to 10mm Round Alum. or Carbon Boom
If you are using a 12mm carbon boom then simply glue a small length of 10mm carbon tube inside

For Downloadable Drawing click on web link below