Beefy Ten Millimeter Aluminum Tail Hook Screw For Bicycles Rear Derailleur Screws Hangar Bolt And Chain Tensioner Hardware 13.8mm Total Length Easy 5mm Hex Wrench Install Lightweight Bike Maintenance Upgrade Part

Aluminum 10mm Rear Derailleur Screw for Bike Hangar - 1pc
✔️ 10mm x P1.0 thread, 13.8mm total length, aluminum alloy

The tail hook screw is a lightweight aluminum bicycle hardware piece designed to secure rear derailleur hangers and chain tensioners. It's used during maintenance and upgrades on road, mountain, and commuter bikes, enabling quick installation and reliable alignment.

✅ Material: aluminum alloy
✅ Size: 10mm x P1.0; total length 13.8mm (0.54 in)
✅ Color: Multicolor
✅ Package: 1 piece
✅ Installation: requires a 5mm hex wrench (not included)

💡 What is a rear derailleur screw used for in bicycle maintenance?

It’s a handy fastener that secures derailleur hangers and chain tensioners, helping proper alignment and tension during setup and repairs.

- Secures derailleur hangers to frame for stable alignment
- Holds chain tensioners in place for smooth shifting
- Made from lightweight aluminum alloy for corrosion resistance
- Sized to fit 10mm x P1.0 with total length 13.8mm