Various Sizes Of Bicycle Headset Sealed BearingsMaterial: Bearing Steel Sealed Dcbikes Product Specifications: Outer diameter (inner diameter): 38mm (27. 2) 39mm (30. 2) 41mm (30) 41. 8mm (30) 47mm (34) 49mm (37) 51mm (40) 52mm (40) mm 38 x 6. 3mm x 45 degree 39 x 6. 5mm x 45 degree 41 x 6. 5mm x 45 degree 41. 8 x 6. 5mm x 45 degree 47 x 7mm x 45 degree 49 x 7mm x 45 degree 51 x 7mm x 45 degree 52 x 7mm x 45 degree Bearings: EC30 will take a 38mm bearing EC34 will take a 41mm bearing ZS44 will take

High-grade

Extra light

Aluminum Alloy

Keychain as gifts or souvenir

Shimano Alivio HG400 9 Speed MTB Cassette

✔✔✔Do let us know if u wish to have your bike pick up from yr home

Colors : Black or Red

Spider Material: Steel

Machined from high quality aluminiium

Integrated

11 speed drivetrains

Rotor not included