-Multi-functional Unit Skateboard Tool for complete skateboard assembly.Skateboard Unit Tool allows you to adjust axle nuts, mounting hardware, and the kingpin nut on the top of the truck. -The T-tool helps you to set-up your longboard with hardware, wheels and trucks. It includes 3 sizes sockets and a slide-out Phillips head screwdriver and Allen key that fits into the top of the handle when not in use. -Easily fits into most pockets and light weight for easy on the go access. -The all in one T-tool has everything you need to tighten up or repair your skateboard -Good quality, not easy to break.Super durable and easy to carry.The sockets size fits 9, 13 and 14 mm nuts.