Mercury – Thunderbolt Propeller | High-Performance Series | High-Polished Stainless Steel | QS5006XMercury Thunderbolt Propeller High Performance Series High Polished Stainless Steel QS5006X Overview Every boater knows that feeling when the hull rises cleanly onto plane and the boat responds exactly the way you expect. Its a mix of trust and relieflike your rig is saying, Ive got you. The Thunderbolt propeller delivers that kind of confidence every time you throttle up. Whether youre running offshore before sunrise or easing into a quiet creek at