Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair PartsChinook Mast Track Box 8 inch Back Chinook Chinook Mast Track Box 8 inch Product ID: 304 Brand: Chinook 2025-05-25 From: $29.99 AUD View or buy the Construction and Repair Parts Windsurfing Other - Chinook Mast Track Box 8 inch from Chinook to discover other options and shipping details. Description The first choice by quality board builders, 2 sizes available 8 inch and 10 inch Back to Windsurfing Other - Construction and Repair Parts More Construction and Repair Parts and others in our range Chinook Slot Box Fin Box Chinook Board Vent With Slot 1 Inch Chinook 3-Hole Micro Adjustable Foot Strap Inserts Fin US Box 8 inch Chinook Footstrap Plugs Slot Box Fin Box Chinook Gor Tex Vent Valve Chinook 10 inch Mast Box Vented With Screw 8 inch Mast Track Box Chinook Board Vent With Thumb Screw 1 Inch