MEETLOCKS Bike Tube 700x38-45C Recycle Butyl Solid Brass Stem Valve Schrader Durable Tubes Various In Long And Standard Valve Stem Lengths To Suit Normal And Deep Section Rims. High Air Pressure Retention! Presta or Schrader Valve! Your Robust And Reliable Partner To Give A Smooth Riding And Handling. Good Value.Carry me, Let's cycling! There Are 1Pcs Pack, 2Pcs Pack, 4Pcs Pack for Rider Choice.