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

• Mount bags to your bike without the need for any tools with Trek Thumb Screws.
• 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 0.8mm thread pitch at 12mm long and 22mm wide head
• Compatible with most bikes with integrated frame mounts