Chromag Headset Top Cap Silver MPFN-TB00073200 They have both an o-ring

They have both an o-ring and a threaded washer to keep the rim scratch-free and to keep the washer tight

5 Color Black Weight 40

}Industry Nine A35 Stem - 32mm 35 Clamp +/-9 1 1/8" Aluminum Purple

Tooth Count 40 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Chainring BCD 110 Shimano Asymmetric Color Black Defined Color Black Material Aluminum

Brake Caliper Type Flat Mount Mount | Rotor Size Rear Flat | 160 Rotor

Chromag Headset Top Cap Silver MPFN-TB00073200 They have both an o-ringThe Chromag Top Cap completes your kit. CNC'd from 6061 aluminum to match your Chromag stem. Comes with a 6061 anodized color matched bolt. TECH SPECS Steerer Tube 1 1 8 Primary Color Silver