The Cane Creek Angleset / Headset ZS44/28.6 EC56/40 0.5 - 1.5 offset is a high-quality headset designed specifically for mountain bikes. This threadless external cup headset features a 1 1/8 inch steerer tube diameter and comes in a sleek black colour. The set includes the headset itself, making it a convenient and essential component for cyclists looking to upgrade or replace their current headset. With the reputable brand of Cane Creek, this product ensures durability and precision in performance for your biking needs.