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About this item

• Fits 20-25mm Road Tires: Sized for 700x20 to 700x25 clincher tires (ETRTO 20-622 to 25-630), the common widths on road racing and performance bikes.
• Supersonic Thin-Wall Butyl: Continental builds Supersonic tubes from thinner material than its standard tubes to noticeably cut weight and rolling resistance.
• 42mm Presta Valve: Threaded 42mm Presta valve with a removable core, suited to shallow, low-profile road rims.
• Seamless Mold-Cured Build: Seamless, mold-cured construction gives an evenly round tube that saves grams on race day and in the saddle bag.
• Two Tubes Included: This pack holds 2 Supersonic tubes, one to install and one to carry as a light spare; each is seamless and mold-cured for an evenly round shape.

Fits 20-25mm Road Tires: Sized for 700x20 to 700x25 clincher tires (ETRTO 20-622 to 25-630), the common widths on road racing and performance bikes. Supersonic Thin-Wall Butyl: Continental builds Supersonic tubes from thinner material than its standard tubes to noticeably cut weight and rolling resistance. 42mm Presta Valve: Threaded 42mm Presta valve with a removable core, suited to shallow, low-profile road rims. Seamless Mold-Cured Build: Seamless, mold-cured construction gives an evenly round tube that saves grams on race day and in the saddle bag. Two Tubes Included: This pack holds 2 Supersonic tubes, one to install and one to carry as a light spare; each is seamless and mold-cured for an evenly round shape.