Edson Marine is the leader in marine steering for sailboat and pleasure boats. For the last 150 years Edson has been a leading innovator in marine industry. Offering great products like Edson PowerKnob voted one of Boating Magazines Best Gear of All Time. Edson's PowerKnobs strap or bolt onto the rim of virtually any make of steering wheel. With the feel of precision engineering, twin races of fast action Delrin ball bearings and a comfortable ergonomic shape, it is possible to effortlessly maneuver any powerboat, from a flats boat, center console or runabout to a sportfish, motoryacht or trawler.