Features: Light operation and smooth shifting, multi clamp band quick assembly. Made of hard steel, durable and not esaily broken, rust proof, and easy to install. Features stable front variable speed performance and narrow antiskid plate design. Can reduces the chance of damage to the lower fork after collision and abrasion of chain. Suitable for BMX bikes, cruisers, electric bikes, folding bikes, hybrid, mountain bikes, etc. Specification: Material: steel Color: black Size(approx.): 10.5cm Speed: 18 Speed, 21 Speed Types: pull up, pull down Package included: 1pc X Front Derailleur Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.