Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesK4 Fins Slot Box Box Blanker 90mm Back K4Fins K4 Fins Slot Box Box Blanker 90mm Product ID: 992748 Brand: K4Fins 2025-05-25 From: $8.95 AUD View or buy the Bits and Pieces Windsurfing Other - K4 Fins Slot Box Box Blanker 90mm from K4Fins to discover other options and shipping details. Description Blanks off Slot Box when not in use 90mm long 9 mm wide 25mm deep Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range Patrik Mast Extension Adjustable Collar RDM Goya Tendon Joint K4 Fins Slot Box Box Blanker 130mm Chinook Deck Washer Patrik GC Tekcam Large Cambers Boge Rubber Power Joint Boge 8mm Brass Inserts Chinook Vent Slot Screw Marlow 4 mm Prestretch Rope Marlow 3.8 mm Formuline Ezzy Batten Tension Adjuster