Compact replacement kit for RC boats that includes a nylon triblade propeller and a drive shaft coupling. Designed for full immersion use and hobby or DIY builds. Key benefits Reliable replacement for damaged or worn propellers and couplings, restoring thrust and handling quickly. Durable nylon construction resists impact and wear while remaining lightweight for efficient performance. Tribladed design provides balanced thrust and stable handling in a variety of water conditions. Simple fit and installation reduce downtime during repairs and upgrades. What it does and why you need it Restores propulsion when a propeller is chipped, bent, or missing. Solves loose or mismatched coupling issues that cause wobble or vibration. Keeps your RC boat waterworthy with components designed for full immersion operation. Important features and specifications Propeller types available: 36mm and 42mm tribladed paddles. Material: nylon for strength, light weight, and impact resistance. Drive shaft coupling kit: for 2mm drive shafts. Listing detail: Size 2.3mm coupling for 36mm propellers is included in this package. Full immersion rated propellers suitable for submerged operation. Performance and fit Triblade geometry improves thrust consistency and reduces cavitation under normal hobby use. Precise coupling fit helps minimize shaft slippage and vibration for smoother runs. Nylon material offers a balance of flexibility and strength to tolerate minor impacts without immediate failure. Practical applications a damaged prop on an electric RC boat to restore speed and steering. Use in a DIY model boat build where a compact 36mm or 42mm prop and secure coupling are required. Keep as a spare for race days or pond sessions to allow quick onsite repairs and reduce downtime. Installation tips Verify shaft diameter before installation to confirm 2mm drive shaft compatibility. Align the propeller and coupling carefully, then secure per your model boat hardware requirements. Check set screws or grub screws for tightness before first run. What is included Nylon triblade propeller and matching coupling kit as specified by the listing size. Compatible use Designed for hobby and model RC boats that accept 36mm or 42mm propellers and 2mm drive shafts. This listing specifies a 36mm prop with a 2.3mm coupling.