Core Trucks has been delivering solid quality at a fair price for over 20 years. The Hollow model saves a lot of weight due to the hollow kingpin and the aluminum hanger, without sacrificing stability. Thanks to the 93A SHR bushings, the axle steers directly and smoothly. This axle width is the classic size for an 8.5" board. Axle Pin Width: 8.50" (216 mm) Hanger Width (The Tee to which the rollers are attached): 5.60" (139 mm) Height: 53 mm Weight: 370 g Recommended Cover Width: 8.375" – 8.625" Price is for 1 axle.