Chromoly Steel Axle. Thread Size: 10mm x 1mm tpi (Threads Per Inch). Axle Length: 145mm. Includes Cones and Lock Nuts. Skewer: Chromoly Axle with Steel Lever. Thread Size: 5mm x 1mm tpi (Threads Per Inch). Axle Length: 165mm. Skewer Includes Springs and Nut. Usage: Rear Hubs, Quick Release. Made in Taiwan.