The Deadbolt Ultralight Thru-Axles are offered in a 6mm flat button head design, for a flush, clean look. Lightweight, easy to use, and secure. CNC-machined from 7000 series aluminum Designed to fit all current Salsa thru-axle frames For other frames, check with the manufacturer for compatibility and other specifications 6mm hex wrench required for installation Specifications Over Locknut (mm)142ColorBlackThread Pitch1.5Thread Length (mm)20Axle Diameter (mm)12Overall Length (mm)167