The Shimano TOURNEY MTB Thumb SL TX30 Shifter 3/6/7/18/21 Speed Gear Shift Lever Set is a high-quality shifter set designed for mountain bikes. Made of durable aluminum, this set includes shifters compatible with Shimano brand components. The sleek black color and trigger shifter style make it both stylish and easy to use, providing reliable gear shifting for your bike. With options for 3, 6, 7, 18, or 21 speeds, this set is customizable to fit your specific bike setup, ensuring smooth and precise performance on your rides.