The EasyTroller trolling plate slows your boat down to as little as 1 mph for slow troll fishing. The EasyTroller's patented spring hinge design flexes upward to prevent damage to the trolling plate under accidental acceleration. Mounts directly to cavitation plate; snaps into position a few inches behind the propReleases with simple pull of cord.Fits most outboard and I/O motors 30 hp and upHeavy duty marine-grade anodized aluminum and stainless steel constructionOne year warranty