Powerdyne - Y4 Skate Tool - 1/2" Socket, 11/16"" Socket, 9/16" Socket, and 5mm Allen Wrench COMPACT, PORTABLE DESIGN - The PowerDyne Y4 Skate Tool has a design that allows for versatile functionality, while still fitting in your pocket. ERGONOMIC, NO-SLIP GRIP - This skate tool has an ergonomic design that provides great grip and torque for any project. 1/2" SOCKET FOR AXLE NUTS - This all-in-one skate wrench has a 1/2" socket that is perfect for adjusting standard axle nuts. SOCKETS FOR KINGPIN NUTS - The PowerDyne multi-functional tool also features a 9/16" socket and an 11/16" socket for adjuting kingpin lock nuts. Also works for skateboards and longboard nuts. 5mm ALLEN WRENCH FOR SCREWS AND PINS - The Y4 skate tool also a 5mm Allen Wrench for toe stop set screws and PowerDyne Arius plate axis pins.