Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesGoya Adjustable Collar And Pin For RDM Extension Back Goya Goya Adjustable Collar And Pin For RDM Extension Product ID: 980557 Brand: Goya 2025-05-04 From: $29.99 AUD View or buy the Bits and Pieces Windsurfing Other - Goya Adjustable Collar And Pin For RDM Extension from Goya to discover other options and shipping details. Description Fits Goya and 211 RDM alloy and carbon mast extensions. Stainless insert ring for maximum strength. 316 grade stainless pin Top ID 32mm Bottom ID 41.5mm Pin Diameter 7mm Pin Length 41.5mm Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range US Box Blanker Select Fin Box Adaptor Power Patrik RDM Cambers Patrik US Box G10 Blanker Chinook Deck Washer Dynafiber Rubber Power Joint Boge 10mm Chinook Powerhaul Pulley And Cleat System Chinook QR Deck Plate No Hardware Marlow 3.8 mm Formuline Chinook SDM Mast Extension Cap