FTP G0 Kαrt Wheel Balancer, 17mm Shaft, Metric Hub Pattern, 6061 Aluminum A "Must Have" tool to eliminate front/rear-end vibration. Lays flat in your tool box. Constructed of high quality 6061 aluminum (Not your typical Chinese pot metal), quality black anodized throughout. Includes aluminum wheel hub and 17mm shaft. Comes standard with 3x58mm international pattern hub, if CRG (3x67mm) or American (2.5inch) pattern is needed, please message us (same price). Note: ours use a 17mm shaft, more commonly used Eur0pean kαrts. Most other balancers use a 5/8" shaft with American pattern hub. Made in the USA