AFT HARDWARE KIT (990768) is a high-quality propeller nut kit complete with accessories designed for Michigan Match Propellers and OEM propellers. The kit includes a Prop Nut to ensure the propeller remains seated securely against the shaft taper, a Flat Washer to disseminate the fastener's load while minimizing heat and friction during the tightening process, a Cotter Pin to repair parts tightly together, and a Rear Spacer to aid the alignment of the prop to the shaft when the inner hub has yet to hold its shape. Key Features: Top-quality propeller nut kit 100% brand new set of accessories and made with the finest quality materials High-performance quality propeller nut kit Durable and built to perform Compact. Easy to store, carry and install. Designed to provide maximum convenience and comfort It has been proven and tested for dependability to ensure it fulfills our quality standards throughout the manufacturing process. Approved marine-grade product Specifications: Brand: Michigan Wheel Condition: Brand New Item Number: 990768 Weight: 2.00 LBS Note: For marine applications For Yamaha "G" 40-60HP outboard motors