Tubes (inner) Other Sizes

24" x 1 3/8" / 24 x 1 1/8" / 600 A" This is a size used on some juvenile lightweights, early Terry bicyles and imitators, most wheelchairs. Frequently confused with the 520 mm size. Note that both 520 and 540 are sometimes labeled 24 x 1 1/8". Available in Schrader (standard) or Presta (narrow) valve.

This is the size that fits most 3-speed bikes. Use this tube for Schwinn 26 x 1-3/8 S-6 (597) tires. Standard scharader (car type) valve.

This size is commonly found on English, Chinese and Indian "roadster" bicycles with "rod brakes" under such brand names as: Dunelt, Raleigh, Rudge, Humber, Phillips, Flying Pigeon.

349 mm (16 x 1 3/8") This is the size used on older Moultons, Bromptons and other folding bikes and the front wheel of some recumbents, and on Greenspeed folding trikes.