Base: 4 3/8" or 111 mm. Height: 4 1/2" or 115 mm. Ideal Weight: 120-160lbs or 65-72kgs. Designed by Maurice Cole. A little more base and tip area for more drive and speed. With increased depth and base dimension from the LBX1 this fin is more suited to bigger surfers and/or bigger boards.One of our most popular quad templates when paired with the LBX2 Next Generation 4.0 or 4.5.