Captain Fin | Chemistry | Twin Fin Boxtail The McCallum Keel is Jeff's

The McCallum Keel is Jeff's modern interpretation of a classic fin keel design

Length 9'2 Nose 17 3/8

Length 9'6 Nose 17 7/8

25"—a proper raked fin template that pairs well with your longboard for driving down-the-line speed and smooth arcs

Length 7'0 Nose 15 3/16

Captain Fin | Chemistry | Twin Fin Boxtail The McCallum Keel is Jeff'sThe Chemistry Twin is based off of their original thruster collaboration that was designed with a wide base, smooth rake, and medium sized tip, for a very high performance feel in all types of surf. With the popularity of all the twins in Chemistrys line up, they wanted that same versatile feel to translate over into their twin offeringhigh performance, able to work in all wave types, and super fun.