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 2025-05-25 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 Chinook Delrin Flat Washer Surf Sail Australia Vent Screw O Ring Boge Rubber Power Joint Boge With Stainless Studs Chinook 4 mm Prestretch Rope Chinook Fin Bolt Neoprene Washer Chinook Mechanical Uni Joint Patrik Tube Rod Batten Joiner Ezzy Volcano K4 Fins US Box Blanker Patrik Tendon Joint