Features:Lightweight Batteries included?:No Product Dimensions:1 x 1 x 1 cm; 138 Grams Features: - The headset is made of quality aluminium alloy material, which is anti-rust, sturdy and durable for long-term use. - Fine machining ensures sleek surface, fits perfectly with your bike headset. - The lid is good for keeping dust and water away to lengthen the durability. - Can prevent the bearing from over-abrasion and make it rotate freely. - Useful accessory for replacing old headset of bike. Specifications: Condition: 100% Brand New Item Type: Bicycle Headset Material: AL6061 T6 Color: Black Model Number: 4456ST Upper SHIS: ZS44/28.6 Lower SHIS: ZS56/40(30) (Code is for quick search, not a accurate specifications. Please refer to SHIS(Standard Headset Information System.) Weight: Approx. 138g Package List: 1 x Bicycle Headset About this item [Precision-Machined]: The bike bearing headset is made of quality aluminium alloy material, which is lightweight but anti-rust, sturdy and durable for long-term use [Smooth Surface]: Internal Sealed Bearing with its surface electroplating polishig. The sealing ring is good for keeping dust and water away to prolong service life [Great Performance]: Bike front fork stem can prevent the bearing from over-abrasion and make it rotate freely; It is a great bike replacement part [Fitment]: Mountain Bike 4444S Headset 44mm 1-1/8Inches; 28.6mm low profile semi-integrated ZS44; Useful accessory for replacing old headset of bike [Note]: Please refer to SHIS(Standard Headset Information System). ZS44/28.6, ZS44/30 [Precision-Machined]: The bike bearing headset is made of quality aluminium alloy material, which is lightweight but anti-rust, sturdy and durable for long-term use [Smooth Surface]: Internal Sealed Bearing with its surface electroplating polishig. The sealing ring is good for keeping dust and water away to prolong service life [Great Performance]: Bike front fork stem can prevent the bearing from over-abrasion and make it rotate freely; It is a great bike replacement part [Fitment]: Mountain Bike 4444S Headset 44mm 1-1/8Inches; 28.6mm low profile semi-integrated ZS44; Useful accessory for replacing old headset of bike [Note]: Please refer to SHIS(Standard Headset Information System). ZS44/28.6, ZS44/30