+3 MAST BASE CSTG WAVE (FOR BALL 38641001 $89.99 In stock Quantity: 1 Add to Bag Product Details UPC: 792176069263 Brand: Hobie Part #: 38641001 Hobie Wave Mast Base Casting (Current) Mast base casting for the Hobie Wave. Newer cup style. Hobie factory replacement mast base for Waves with serial numbers greater than 1438 that utilize a round mast ball. Save this product for later Favorite