Stud Boy Shaper Bars - 7.5in. DOO-S2410-75 The first major breakthrough in wear bar technology since the 1950s Unique corner-carving hourglass design yields better control at speed with no increased steering effort Better tracking on trailshourglass wear bar shape catches snow from ski sides to make steering more positive Average of 1 - 2 tighter turning radius in soft snow conditions 20% lighter than conventional 1/2 diameter round wear bars