13 1/4" Small Hub - Yamaha The TURBO 1 utilzes a blade geometry design to achieve exellent overall preformance on medium to heavy loaded boats thet require the prop to lift the bow of the boat. Turbo 1 is available in a wide varity or pitches, making it an exellent choice for stern drive and V/6 outboard applications. Y132523RA$269.99 (c) 2005. Soderbloom Manufacturing Inc. All Rights Reserved.