24 volt, black case as current colour (same ram as older grey case units). Including flanch, bolt and steel splint pin (20mm). Mounting bracket not included but sold separately: Eltrim Mounting Bracket. Allows a boat to have a slower planning speed, often essential for rough weather. Adjust the trim of your boat to show the designed angle of attack. Fetch your boat onto the plane faster, reducing fuel consumption at 'hump' speeds. Effectively add length to the hull, which can result in an improvement in performance and handling. Reduce the amount of heel in order to show the maximum amount of 'Vee', to the water rather than landing of the side of the ‘Vee', reducing both hull stress and the passenger stress of uncomfortable cruising. As fitted to Sealine S48, T47, T51, T52. Also available in 12V (for Sealine 12v models): Eltrim 12v Trim Tab Motor. IMPORTANT: Bellows should to be changed every 2 years, available here: Eltrim Rubber Trim Tab Bellows (Pair). Original Sealine OEM supplied product. BritBoatParts.com are official suppliers of all Eltrim products in the UK.