Sierra STT3131R Standard 9″ x 12″ Trim Tab Kit These Sierra Trim Tabs are made of 12 gauge 304 stainless steel with the stainless finish for extreme durability in marine environments. Trim tabs make the single most important difference in the way your boat rides and performs. They are optional on some boats but should be as standard as power trim and tilt. An auto-retract feature activates in situations such as shift moving to reverse. The kit comes with all hardware needed to mount your new trim tabs along with a LED display dial controller and LED position indicators. The controller and actuators work together to give an exceptional response with precision control. A programmable favorite button allows you to save your desired tab position for one tough planing. Trim Tab Kit Includes: 2.25″ Standard Trim Tab Actuators Trim Controller Wiring Harness 12″ x 12″ tabs 316 Stainless Steel Hardware Trim Tab Features: LED position indicators Adjustable pitch & roll control Dial control w/LED display Programmable favorite switch Auto-Retract feature