Alloy : These bike derailleur screws adopt premium alloy , which is, rustproof and .
High Reliability : With fine manufacturing process , the for surface is finely polished to ensure the strength and improve the reliability of fastening .
Light Weight : These front rear derailleur screws feature small size and light weight , DIY replacement part for bike .
Easy Installation : These bike screws adopt small size design , convenient for you to install and disassemble , save time and effort for you .
5 Pieces : 5 pieces of bike derailleur screws (M4 3Pcs 13 . 5 2Pcs 20mm) are included in the package , meeting your different needs .