These floats were designed by long time salmon and steelhead river fisherman who were looking for a float system that would work with a wide range of lure weights and be durable and long lasting. West Coast Drift Floats are made from a soft space age material that can be twisted (like ringing water out of a towel) or bent in half without breaking or separating. The line tube through the center is made from a material that the new braided lines can't cut or groove. The float weights are used to select the float needed to float high in a vertical position for a good view to the fisherman.. The color combination is high visibility with a charcoal gray bottom, chartreuse ring and a fluorescent red top. Ten sizes to choose from 1/16 oz. to 5 oz. The length measurement is from both rounded ends, not from the ends of the line tube.