3/8" Short
Allows you to run 14mm pegs on a 3/8" axle or a 3/8" axle in 14mm dropouts with no peg.

3/8" Long
Allows you to run pegs on a 3/8" axle in a 14mm dropout frame or fork.

3/8"
Thread Pitch: 3/8"x26tpi
Wrench Flat: 17mm