Maxpower 335481 Replacement Tire Inner Tube 4.10" X 3.50"  X 4" with L-Shaped Valve Stem Replaces Snapper 1-0821, 7010821, and 7010821YP L-Shaped Valve Stem Replaces OEM #: Snapper 1-0821, 7010821, 7010821YP Valve Stem: 90 degree angle 4.10" X 3.50" X 4" Easy to install MaxPower carries a wide variety of wheels, tires and tubes manufactured for peak durability