Aluminum alloy threaded brake lever barrel adjuster with lock nut How do I know what size I need?  These M10 adjusters typically fit newer mountain bike levers or higher end BMX levers (the Shimano DX levers from the 1990's used M10 adjusters) - but as always, please measure before ordering. M7 is far more prevalent for BMX (which we also sell in other listings). There is a pretty big difference between 10mm and 7mm so getting the right one is easy enough if you measure the diameter of the threaded section of your current adjusters. M6 is a third size, but M6 adjusters are typically used on calipers, not levers. * Color: DARK BLUE ANODIZED w/ black lock thumb ring "nut" * Material: ALUMINUM (both pieces) * Size: M10 X 1.0 X 16mm * SOLD INDIVIDUALLY