Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesChinook SDM Mast Extension Cap Back Chinook Chinook SDM Mast Extension Cap Product ID: 178 Brand: Chinook 2026-07-20 From: $14.99 AUD View or buy the Bits and Pieces Windsurfing Other - Chinook SDM Mast Extension Cap from Chinook to discover other options and shipping details. Description Plastic cap for Chinook SDM mast extension. OD 48mm fits 44mm tube Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range Chinook Delrin Flat Washer Ezzy Sail Keyring Chinook Vent Slot Screw Chinook Adjustable Collar And Pin For RDM Extension Streamlined Quick Connect Deck Plate Patrik GC Tekcam Reduced Cambers Surf Sail Australia Vent Screw O Ring Chinook Mast Cup Kit Surf Sail Australia Vent Screw O Ring 10 pack Ezzy Split Cam