Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair Parts8 inch Mast Track Box Back Surf Sail Australia 8 inch Mast Track Box Product ID: 594081 Brand: Surf Sail Australia 2025-05-25 From: $29.99 AUD View or buy the Construction and Repair Parts Windsurfing Other - 8 inch Mast Track Box from Surf Sail Australia to discover other options and shipping details. Description The first choice by quality board builders, 8 inch box Vent valve and vent screw not included. Recommeded use with "Surf Sail Australia Chromed Brass Vent Screw" Back to Windsurfing Other - Construction and Repair Parts More Construction and Repair Parts and others in our range Chinook Fin Box 8 inch Chinook Tuttle Fin Box Chinook Fin Box 10 inch Chinook 10 inch Mast Box Vented With Screw Fin US Box 8 inch Chinook Board Vent Retro Fit with slot Screw .625 inch Patrik Vent Screw Insert 5 Hole Footstrap Inserts 8 inch Mast Track Box Chinook Footstrap Inserts 5 Hole