This support bracket, with keel rollers included, can be installed on a boat trailer to support the bottom part of the boat, which makes it an indispensable boat trailer part. Since the width of our bottom support bracket can be adjusted, it is great for boats from 80 – 124 cm wide, which suits both big and small ones. Constructed of excellent zinc-coated steel, this bottom support bracket will certainly offer you a long-term service life. Material: Steel Steel thickness: 1.5 mm Weight: 10 kg Maximum capacity: 800 kg Keel roller diameter: 11 cm Width: 80 - 124 cm (increase / decrease by 2 cm each) Boat Trailer, Boat Trailers, Boat Trailer, Boat Trailers, Winch Stand, Winch Stands .