Impac Inner Tube Schrader Black 12 Inch - IMPAC bicycle inner tube Schrader / French Valve - These will fit 12" wheeled bikes / prams running tyres from 1.75 - 2 1/4 - Standard 35mm Schrader long valve - Reinforced dual thickness tube valve interface to prevent punctures - Light weight butyl rubber construction Suitable replacement tube to fit the following tyre sizes: 12 x 1.75 (47-203) 12 x 2.00 (50-203) 12 x 2.10 (54-203) 12 1/2 x 2 1/4 (62-203) No need to wait around for the courier as they conveniently packed for FREE LETTERBOX DELIVERY! PLEASE NOTE: To keep the price low, this tube may be shipped without the original manufacturers box.