Even with puncture resistant tires, a spare tube is always a good idea! A: 700 x 32-35 Schrader Tube - Fits: Glide, Classic, Onyx, Turi, Eight, e-Classic, and L Train B: 700 x 40 Presta Tube - Fits Apollo and Gemini C: 26" Schrader Tube - Fits Coast and Launchpad D. 26 x 3.0" Schrader Tube - for e-Coast E: 27.5" Presta Tube - Fits: 600, Sauce, and Embark F: 27.5" Schrader Tube - Fits Current G. 29" Presta Tube - Fits 600X, 600ADX, and 600HXT H: 24" Tube - Start 24 I: 20" Tube - Start 20 and Folder J: 16" Tube - Start 16 K: 700 x 20-28 Presta Valve - Ace of Spades L: 700 x 20-28 Schrader Valve - Ace of Clubs