DescriptionAluminum alloy construction provides excellent stability and durability. It can prevent the bearing from excessive abrasion and cause it to rotate freely. It can be a great replacement for the old vessel or broken group.Feature-Color: As Shown. - Material: Aluminum Alloy. - Size: 5.06 x 4.4 x 5.06cm. - It can be a great replacement for the old or broken bowl group of bike. - The headset is made of quality aluminium alloy material, anti-rust, sturdy and durable. - Easy installation. Suitable for most mountain bike, road bike, and so on. - Can prevent the bearing from over-abrasion and make it rotate freely. - High precision machining and fine workmanship, colorfast and anti-deformation.