Independent Trucks 215s feature a retro Stage 4 style single wing hanger design and are great on wider boards from 9.5 to 10.5 inches. 55mm tall for optimal performance and wheel clearance with wheels 56mm and under. A356 T6 Aluminum Hanger & Baseplate The best lightweight aluminum alloy heat treated to T6 condition for strength, durability, and grind feel. SCM435 Chromoly Steel Axle Highest quality and durability available. Grade 8 Kingpin Never break, never bend. 215s feature 6 hole universal baseplate with old and new school mounting pattern. Independent Trucks are Built to Grind and Guaranteed for Life.