The NISSAN/TOHAT HUB KIT 50/70 HP (212) can sustain wear and tear under normal operating circumstances without spinning or breaking down. The one-piece design reduces the number of parts required and removes the difficulties associated with multi-part hub systems. The bottom unit protection and shock-absorbing high-tech polymer cushion are features of the NISSAN/TOHAT HUB KIT 50/70 HP (212). It is simple to install with a few simple pieces and simple, clear step-by-step instructions. Key Features: Seats to the propeller hub cavity to decrease hub chatter and vibration reduces hammering while changing gears or striking a submerged item by providing a 10 degree deflection Rubber structure in one piece with anodized aluminum splines Nissan/Tohatsu 50 HP (1981 1991 only), 55 HP (1981 1988), 60A (1986 1999), 70A and 70B (1981 1955); 13 teeth spline with 3-1/4" Gearcase Contains all required hardware and step-by-step instructions. Specifications: SKU: HK212 Weight: 1.30 LBS G/C SIZE: 3.25 DRIVE TYPE: 13 Spline HUB TYPE: Hub Kit Alternate Products SKU: "HK112" Manufacturer Part Number (MPN): 212