Alienation Feather-Weight Tube Option:INNERTUBE use: for 12 inch bikes

use: for 12 inch bikes with 3/8 inch axle diameter

gyro tab holes : yes

additional information: internal bushing with sealed roller bearings Super low-profile 19mm cross-section 90mm wide bodies

space between bearings: 66mm

Alienation Feather-Weight Tube Option:INNERTUBE use: for 12 inch bikesdiameter: choose diameter in inch in the menu above width: 1,75 2. 50 inch valve: schrader (car) 40mm long sold per piece additional information: Ultra light TPU tube for bmx racing and street use Improved puncture and snake bite resistance over standard butyl tubes Better air retention than butyl tubes paired with a premium Schrader valve