1、APPLICABLE MODELS: Fit for Mariner: 2 cycle 60HP, 4‑stroke 40 ‑ 60HP, 70 ‑ 250HP; Fit for Force: 90 ‑ 120HP; Fit for Mercruiser: for Alpha and for Alpha One, for Bravo One (less than 400HP). 2、PART NUMBERS: OE numbers for reference are 835290Q1, 835266A1. Original standard, the manufacturing in accordance with strict OE specifications, direct replacement 3、PREMIUM MATERIAL: The propeller hub drive sleeve is made from high strength and durability engineering plastic materials, ensuring longevity performance. 4、ENHANCED PROPELLER PERFORMANCE: This propeller hub drive sleeve enhances the performance of the propeller, ensuring smooth and efficient operating. 5、EASY INSTALLATION: The prop hub drive sleeve is designed for easy installation, allowing for without hassle replacement or installation on the propeller hub.