1 1/4" TO 1" NYLON (NB6) is a high-quality bore reducer made with the highest level of craftsmanship. Anchor Bushing's propeller bore lowering bushings reduce the diameter of a larger bore inboard propeller shaft. The product is made of the highest-quality materials, including Nylon, which is strong and rigid, has good chemical resistance, and reduces noise, weight, and mating parts. Key Features: Top-quality Nylon Propeller Bore Reducer 100% Brand new and made with the highest-quality materials in the industry Includes a brass step key and is compatible with propeller shafts with a standard SAE taper. Can be easily attached and detached Provides maximum strength and endurance Designed with the highest level of craftsmanship Built to perform Compact. Easy to store, carry and install. Designed to provide maximum convenience and comfort It has been proven and tested for its exceptional dependability throughout the manufacturing process Approve marine-grade product Specifications: Brand: Anchor Bushing Inc. Condition: Brand New Item Number: NB6 Weight: 0.16 LBS Size: 1 1/4" TO 1" Material: Nylon Note: For marine applications Standard marine taper and come with brass step keys.