Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesChinook SDM Mast Extension Collar And Pin Back Chinook Chinook SDM Mast Extension Collar And Pin Product ID: c175 Brand: Chinook 2024-12-25 From: $41.50 AUD View or buy the Bits and Pieces Windsurfing Other - Chinook SDM Mast Extension Collar And Pin from Chinook to discover other options and shipping details. Description Tried and trusted. Fits 46mm extension tubes. Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range Patrik RDM Cambers Patrik Metal Camber Spacer Chinook Delrin Flat Washer Select Fin Box Adaptor Power Chinook Coffee Mug Patrik Power Box Box Blanker Surf Sail Australia Mini Tuttle Plastic Cover With Screw Patrik GC Tekcam Large Cambers Ezzy Roller Cam EXOCET EVA Nose Protector