Features: 1Aluminum Alloy: Using high quality aluminum alloy material, the bicycle headset is light in weight and not easy to deform, ensuring a long service life. 2High Strength Star Nut: Steel headset star nut, which is light in weight and of high strength and long service life, it is a perfect headset accessories. 3Double Bearing Structure: The upper and lower double bearing structure of the headset is smooth and unimpeded, effort saving, and can well protect the headset. 4Product Application: The headset is suitable for ordinary straight fork tube. With 44mm outer diameter, it is suitable for head tube with 44mm inner diameter. 5Perfect Replacement: Easy to assemble and reliable to use, it is a great headset replacement for your bike, making riding easier and more enjoyable. Item Type: Bicycle Headset Material: Aluminum Alloy Steel Product Weight: Approx. 110g / 3.9oz Application: Suitable for ordinary straight fork tube Package Included: 2 x Bearing Headset 1 x Headset Star Nut Top Cap Set 1 x Upper Compression Ring 1 x Upper Headset 1 x LowHeadset 1 x Low Cover 1 x TopCover