Pivot Point Hub Kit - 505 Features Lifetime Warranty Never buy another hub kit system again Inner splines conform to motor Outer hub compatible with different accessories Reduces gear shock and motor/drive damage Save up to 30% over purchasing a replacement accessory Eliminates propeller vibration and chatter Eliminate hub cracking and failure Corrosion resistant materials - brass splines Reduces gear shock and motor/drive damage Compatible with Michigan Wheel XHS and Mercury Flo Torq hub kits, but greatly increases ease of installation, durability, and shock absorbing value. Also fits all Michigan Wheel and Mercury interchangeable propeller