Mercury - Speedometer Pickup Tubing Water-Pressure Speed Line 32-5495053. OverviewThis 53-foot roll of pickup tubing is what carries water pressure from the transom pickup to your analog speedometer. It's long enough for larger boats or clean re-routes where old tubing has gone brittle or started to crack. Out on the water, good tubing keeps the gauge steady instead of bouncing or dropping out. Simple part, but the speedometer depends on it.. Key Features • 53 ft (16.15 m) Length - Plenty for lo