From ProTek RC:
ProTek 1/8 Buggy Tire Tubes are an airtight 8″ tall, 4.75″ diameter screw on lid storage tube that is perfect for 1/8 Buggy, 1/10 Short Course, No Prep/Outlaw Drag Racing and Crawler tires smaller than 4.75″. These tubes are molded from PET, making them strong and lightweight, and are a great option for storing extra tires or as replacements for your ProTek 1/8 Buggy Tire Bag. Package includes one tube, and one lid.
NOTE: Storage bag shown in photos is not included.