Upgrade your cycling experience with the Promax IG-45 Alloy Sealed Integrated Tapered Headset. This high-quality headset is made in Taiwan. With its threadless integrated/internal (IS) headset type and alloy sealed design, you can be sure of a smooth and reliable ride. The headset comes with a 1-1/8" top and 1.5" bottom, making it compatible with a range of bike frames. Its weight of just 5 oz means it won't add unnecessary bulk to your ride. This headset is the perfect choice for any cyclist looking for a reliable and high-performance option.