Shaper Wearbars (POL-S1225-75) by Stud Boy®. Carbide Length: 7.5". To order correct length of carbide, add the following suffix as shown to end of part number -45 = 4.5", -60 = 6", -75 = 7.5", -90 = 9". Shaper Bar Camoplast. The Shaper Bar™ takes the wearbar design and performance to a new level! This bar offers a unique shape that provides much better turning than conventional bars and offers a 20% weight savings too! The concave side profile on the Shaper Bar™ grabs and holds snow rather than allowing snow to slip by like other wearbars. While the shape of this bar improves the turning radius of your sled on the trail, the large 60º carbide provides great control and wear on hard surfaces. Zinc plated to resist corrosion and eliminate paint in threads.