The Shimano Deore SL-M591 3x9 Shifter Set in black is designed for mountain bikes, providing smooth and precise shifting performance. Compatible with Shimano XTR, SLX, Deore XT, Deore LX, Claris, and Altus models, this trigger-style shifter set includes shifters and cables. With 9 speeds, this shifter set is perfect for tackling various terrains on your mountain bike XC adventures. Upgrade your ride with this reliable and high-quality Shimano Deore shifter set. Get ready to conquer the trails with ease and precision. Shifting precisely and quickly.