Simson Inner tube patches Assorted. This vulcanizing patches will help you get back on your bike in no time. Suitable for almost all inner tubes. Also to refill the used patches from the Simson Puncture Repair kit. To use in combination with the Simson Solution. Consists 9 pieces inner tube patches: 2 x 22mm, 3 x 25mm, 2 x 33mm, 2 x ovaal. To use in combination with the Simson Solution.