Sold in Sets of 2 New Independent MiD trucks feature a lower profile hanger for optimal contact point angle on your nose and tail for flip tricks, ledges, and all-around street skating with a recommended wheel size of 53mm and under.The newly designed and first ever Independent inverted kingpin can be used with either a 5.5mm Allen key or standard 9/16" hex wrench. The innovative new Shaft Nut in the baseplate creates a rigid and durable solution to lateral movement found in most inverted kingpin designs and increases adjustability.The new MiD is 52mm tall and built on Independentճ legendary geometry with full size cushions for maximum turning action and comes in 129, 139, 144, 149, 159 sizes.The all new design includes a new baseplate stamp and size designations underneath the hanger for easy identification.52mm tall356 Aluminum hanger and baseplate4140 Chromoly steel axleInverted Grade 8 kingpin w/ 9/16" & 5.5mm AllenSteel Shaft Nut with nylon locking insert WIDTH 159 HEIGHT 52.0 mm AXLE 129 - 7.60 in139 - 8.00 in144 - 8.25 in149 - 8.50 in159 - 8.75 in HANGER 129 - 127 mm139 - 137 mm144 - 144 mm149 - 149 mm159 - 156 mm WEIGHT 129 - 383139 - 392144 - 402149 - 409159 - 412