Mountain Bike Derailleur - 21 Speed Bike Shift Kit, Aluminum Alloy Gear Mechanism | Durable Precision One Piece Cycling Gear Set Pair

• Sturdy Material Our mountain bike derailleur is made of high-quality aluminum alloy, wear-resistant and durable, not easy to rust and deform, perfect for long-term riding, suitable for using in most weather conditions.
• Convenient Installation Our bicycle transmission is equipped with convenient installation. You can also install it with one hand. It's so easy anyone can do it!
• RECOMMENDED FOR MANY TYPES: Our bike shift set has a universal design and can be recommended for many types, including mountain bikes, urban bikes, recreational bikes, road bikes and folding bikes.
• SAFE AND COMFORTABLE:The rear derailleur of our bike can be adjusted slightly in multiple locations, which greatly improves safety and comfort, giving riders a different and flexible riding experience.
• Convenient to Repair Our rear speed derailleur is convenient for storing and repairing, and easy to install. If you don't use it, it won't take up space.

Features: 1.Durable aluminum alloy material and good shifting performance ensure safe and stable driving. 2.Easy to use and maintain. 3. Suitable for mountain bikes, road bikes, folding bikes, etc. Specification: Name: Bicycle Derailleur Set Material: aluminium alloy + ABS + carbon steel Colour: black. Style: front derailleur, rear derailleur, right, left, and right, transmission 4 piece set Left finger weight: approx. 174g Weight of the right finger: approx. 168g Rear derailleur weight: approx. 8 oz Front derailleur weight: approx. 136g Packing list: 1x Front Derailleur / 1x Rear Derailleur / 1x Right / 1x Left / 1x Left & Right / 1x 4pcs Transmission Set