Rook/Colt Tube - 26" x 2.1"

Standard inner tube for 26" x 2.1" tires, designed for Surface 604 commuter-series eBikes with 26-inch wheels. Fits both Rook and Colt models from 2016 through 2020.

Schrader valve for convenient inflation with any bike pump or air compressor. Durable butyl rubber holds air reliably. One tube per package — consider buying extras so you always have a spare ready to go.