Trek Thumb Screws – Pack of 4

Trek Thumb Screws come in a pack of four to securely, quickly and easily mount bags to your bike with integrated mounting holes.

Designed to mount bags on Trek bikes with integrated frame mounts.

No tools required – install and remove using only your hands

M5 thread size with 0.8 mm thread pitch at 12 mm long and 22 mm wide head

Compatible with most bikes with integrated frame mounts