brand new and high quality Introduction: Hello friends! First of all, let me thank you for cycling in your daily life, we both know that this healthy low-carbon lifestyle does a lot for our mother earth, hope we can keep it as one of the best ways when you go out. Whether you are just looking for a shifter for your regular or professional bike, this shifter can help you ride a bike more safely. Speed is exciting, that's life! Features: Durable, wear-resistant. 7 adjustable gears for 21-speed bike. Including inner gear cable, no coil. Products made of aluminum alloy and iron cable material. Make you ride a bike more convenient and efficient. One has 1-7 numbers for you to choose the gear, the other is a spin button without numbers. You can adjust the front 3 gears + rear 7 gears, that is, 21 gears or other possible combination. Can be used on a regular bike, mountain bike, folding bike, road bike, etc. Specification: Product Name: SL-TX30-7R Shifter 7 gears 21 speeds for mountain bike Material: Alloy + Plastic Net Weight: ±207 grams Color: Black (as shown in the picture) Fits handlebar: 22.2 mm Cable length: about 165 cm-205 cm Model: TX 30 Components: Shifter Gear: 21 speeds Occasion: Bicycle, bike Quantity: 1 set Warm prompt: 1. Since different measurement methods are used, there will be 1-3 cm deviation for the items, please make sure it is okay for you before ordering; 2. Due to different monitors and lamplight, the picture may not reflect the actual color of the item, thank you very much for your kind understanding! 3. This shifter is applicable to almost all standard mountain bikes, folding bikes, may not be suitable for other special bikes. 4. Shifter only, other accessories not relevant to the demonstration in the picture are not included. Package includes: A pair of shifters x 1