General description Brand new inner tube designed for durability and quality. This inner tube features a straight metal valve stem, making it suitable for various applications. Technical specifications Size: 3.50/4.00-6 Valve Stem Style: TR13 Valve Stem Length: approximately 3.5 cm / 1.38 inch Material: Rubber Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with 3.50 / 4.00-6 tires Reference brands: BMX, Fly, Hi-Bird, JCL, Linhai, Loncin, Sunl, Tank, United Motors Usage Check the size before purchasing to ensure compatibility. Other information Package includes: 3 x Inner Tube Note: Light shooting and different displays may cause the color of the item to differ slightly from the actual product.