Scale-looking aluminum center mounting rudder. We would suggest this blade length/size for a boat in the 45" (1150mm) to 55" (1400mm) range. Designed to be used with the tfl-502b75-01 scale-looking hydraulic steering linkage system for a real-looking Offshore Racing style system. The triangle center mount style works well with catamarans. Includes brass breakaway screw to help minimize damage from the blade hitting an object while driving. Mounting Bracket Measures:Width: 32mm (1.26")Height: 38mm (1.49") Blade measures: Top of blade mount to the bottom of blade 150mm. The leading edge of the blade itself 105mm.Transom mount to the leading edge of the rudder blade approx 7mm. Suggested for a boat in the 45" (1150mm) to 55" (1400mm) range. Includes:(1) Center Mount Rudder Assembly.(2) Linkage Cable pn# tfl-502b75-1 Linkage Specs:Length: 330mm (13")=Requires:Servo arm and clevisNote:Boat not included