Cane Creek 40 IS41 Integrated Headset-1 1/8" park-tool mid or high design) &

mid or high design) & two 3mm spacers

One spring design

The integrated-style bearing

68 kg) MATERIAL Butted 4130 CrMo

Cane Creek 40 IS41 Integrated Headset-1 1/8" park-tool mid or high design) &PRODUCT DETAILS Top Type IS Integrated Top Head Tube Inside Diameter 41. 1mm Stem Clamp Diameter 28. 6mm Top Stack Height 9mm Top Bearing Type Black Oxide, Sealed Bottom Type IS Integrated Bottom Head Tube Inside Diameter 41. 1mm Crown Race Seat Diameter 30. 015mm Crown Race Type Steel, Face Sealed Bottom Stack Height 1mm Bottom Bearing Type Black Oxide, Sealed Material 6061 Color Weight 71g J&R Tip J&R does not carry any frames that use this headset