The Quick Silver Black Diamond 14.5 × 19P propeller is a high-quality, durable propeller designed by Mercury Marine. With a pitch of 19", this propeller is specifically designed for optimal performance in boats. It is a reliable choice for those looking to upgrade or replace their current propeller with a trusted brand like Mercury Marine. Though it does not come with a warranty, the Quick Silver Black Diamond propeller is a reliable and efficient option for boat enthusiasts.