Velowurks Tubes 700x28/32 SV Self Sealing 14mm FFW51mmVelowurks self-sealing inner tubes come pre-filled with sealant to fill punctures. The 700c x 28-32mm size inner tube is an excellent option for hybrid and commuter bikes and features a 32mm length Schrader valve. Specs: Size: 700x28-32c Fits Tire Sizes: 700c Fits Tire Widths: 28 - 32mm Valve Ty..