vintage Sure Grip Skateboard Trucks: These skateboard trucks are a best choice for skaters who appreciate the timeless design, durability, and performance. The hourglass-shaped base plates and smaller mounting holes capture the essence of vintage skateboard design, offering a better grip for riders who appreciate classic style Durable Aluminum: Our trucks are crafted from pure cast aluminum that strike a balance between durability and a lightweight build, ideal for various skateboarding styles. Aluminum bushing cups enhance the overall strength and performance of these trucks, ensuring they can withstand the toughest skateboarding challenges Strong Axles: Sure-Grip Trucks provide strength and resilience for various skateboarding styles with 4 1/2" long 5/16" (8mm) diameter heat-treated steel axles. This has a unique mounting hole pattern. this is not a standard skateboard mounting hole setup Sold in Pairs: Every purchase comes complete with a pair of Sure-Grip Vintage Skateboard Trucks, ensuring that you have all the essential components required for enhancing and personalizing your skateboard setup with ease. Sure Grip Vintage Skateboard trucks and made in the USA from the original mold since the 1960's. This pair of trucks and base plates is made in the USA from pure caste aluminum. The trucks have 5/16" (8mm) heat treated steel axles, urethane bushings, 9/16" hex headed king pins, aluminum bushing cups. The OG base plates have an hourglass shape and small than normal mounting holes (you will have to drill them out to put in standard skateboard mounting hardware). Sold as a pair of two complete trucks and are made from the same mold as 40 plus years ago. Axle length 4 1/2 inches Truck casting length 1 7/8 inches Axles size 5/16" (uses 8mm bearings) Baseplate length 2 11/16 inches