Mercury - Flush Mount Trim Pad (Single) Helm Trim Control 87-879303A01. OverviewThis flush-mount trim pad gives single-engine boats a simple, clean way to adjust engine trim right from the helm. It sits flat in the dash, so it doesn't crowd your controls or stick out where your hand bumps it. The buttons have a comfortable feel, making it easy to tap the engine up or down as conditions change. It's a small helm detail, but it makes everyday driving feel a little smoother.. Key Features • Single-