Introducing the Surron Tube 250/275 19 Tr 4 Valve Stem — a premium inner tube designed to power your ride with reliability and confidence. Crafted from an ultra-high-grade blend of synthetic and natural rubber, this tube delivers exceptional longevity and pinch resistance, so you can push harder and ride longer. Durable materials: Ultra high grade synthetic and natural rubber for long life and pinch resistance. Robust thickness: 2mm wall thickness provides lasting strength without excess weight. Exceptional value: Top quality at an economical price. Easy installation: Talcum powder coated surface for smooth mounting and quick inflation. Smart packaging: Rigid, attractive box for easy stacking and storage. Valve specification: 19 Tr valve stem with a 4 Valve Stem design for secure inflation on Surron 250/275 rims. Designed specifically for Surron 250/275 rims, this inner tube offers a precise fit, reliable sealing, and dependable performance across daily rides, trails, and everything in between. Equip your ride with a tube built for durability and value without compromise.