Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesK4 Fins US Box Blanker Back K4Fins K4 Fins US Box Blanker Product ID: 974814 Brand: K4Fins 2025-02-21 From: $14.99 AUD View or buy the Bits and Pieces Windsurfing Other - K4 Fins US Box Blanker from K4Fins to discover other options and shipping details. Description Blanks off US Box when not in use. 130mm top 9 mm wide 25mm deep Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range Surf Sail Australia Mini Tuttle Plastic Cover With Screw Chinook Fin Bolt Neoprene Washer Chinook Footstrap Retaining System Patrik Tendon Joint Chinook Mechanical Uni Joint Patrik Metal Camber Spacer Chinook 4 mm Prestretch Rope Boge Rubber Power Joint Boge With Stainless Studs Chinook Vent Slot Screw Patrik 4.0 mm Spectra Dyneema Downhaul Rope