Feature: 1. Applicable Model: The propeller nut kit is for outboard engine 30HP to 60HP. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2. OE Number: The part numbers for reference are 66T‑W4599‑00, 66T‑W4599‑00‑00, 66T‑W4599, 66T‑45997‑00, 90389‑22M01, 663‑45987‑02, 90171‑16011, 91490‑30025. 3. Sturdy Metal Construction: The marine propeller nut kit is made from rust proof metal that can withstand marine environments, resistant to oxidation and wear, ensuring long lasting use. 4. Reliable Performance: With this hardware nut kit, you can ensure optimal propeller use, maximizing your boat's speed and fuel efficiency, enhancing overall performance. 5. Easy Installation: This outboard propeller nut installation kit is designed for simple installation. You can set up and secure your propeller in no time. Specification: Item Type: Prop Nut Kit OE Number: 66T-W4599-00, 66T-W4599-00-00, 66T-W4599, 66T-45997-00, 90389-22M01, 663-45987-02, 90171-16011, 91490-30025 Fitment: Fit for Outboard Engine 30HP-60HP. Package List: 1 x Propeller Nut Kit (4pcs) Note: 1. Please double check the part number and fitment of your item, matching information is for reference only.2. Installation by a professional mechanic is strongly recommended.