Inner Tube 3.50/4.00-10 TR87 short 90 Degrees Metal Stem (10 mm dia.) - Fits on 3.50-10 | 4.00-10 | 100/90-10 Motorcycle Inner Tube 3.50/4.00-10 TR4 Straight Valve Stem* TR-4, Centered short round metal stem (10 mm dia.) Fits on these Tube Type Tires: 3.00-10, 3.50-10, 4.00 -10, 100/90-10 Heavy duty durable valve stem. Unbeatable performance and value.