Features: Easy installation for DIY and professional use: Designed with intuitive mounting points and clear instructions, these jack plates can be installed with basic tools, saving time and labor costs for both DIY boaters and professional mechanics. Enhanced safety & stability at high speeds: The reinforced aluminum build and secure mounting system minimize vibration and engine sway, providing stable performance and increased safety during high-speed cruising or in choppy water conditions. Specifications: Material: aluminum Color: silver Size: one sized approx. 15.16 x 3.94 x 3.94 inches/ 38.5 x 10 x 10 cm, the other one sized approx. 12.4 x 3.94 x 3.94 inches/ 31.5 x 10 x 10 cm Package includes: 1 Set fixed jack plate Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays