Bike headset parts aluminium Integrated Gineyea GH-523
 
1.The bike headset set is made of quality aluminium alloy material, anti-rust, sturdy and durable.
2.The threadless heavy duty bicycle headset is good for keeping dust and water away to lengthen the durability, which is your best choice for bicycle.
3.With forged and CNC machined crmo cups and oversized 1/4 inch bearings in the lower cup, this headset will not let you down.
4.This mountain road headset has an aluminum alloy structure that can provide excellent stability and durability.
 
Specification: 
Size
1-1/8" to 1-1/2"
Finish
Silver,BK,AD
Material
Aluminum
Diameter
28.6*41-52*30 or 39.8
S.HEIGHT
8+1=9+1mm
Bearings
Sealed Cartridge(P03*P16)
Weight
75g+65g