ITEM NAME:Straight Bicycle Headset Internal Road Bike 42mm 52mm Bowl Group Contact Bearing Features: Material: Made of alloy material, this product is sturdy and durable. Anodized: Adopted anodized processing, anti-rust, colorfast, and non-deformation. Durable:High strength and unbreakable, long service life. Easy to install and reliable to use, very practical. Cycling:Good replacement for your bike, make riding easier and more enjoyable. Suitable: It is suitable for 28.6-39.6mm tapered tube front fork, 42-52mm conical frame Specification Material: Alloy Color: As shown Surface Treatment: Anodizing Size: 28.6 x 42-52 x 39.8mm Fitness: For 28.6-39.6mm Tapered Tube Front Fork, 42-52mm Conical Frame Height: About 30mm Package included: 1pc x Bicycle Headset Notice: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement..1pc x Bicycle Headset. Anyway we will try our best to avoid this kind of thing. Durable:High strength and unbreakable, long service life. Height: About 30mm. Size: 28.6 x 42-52 x 39.8mm.