BMX Racing tubes with PRESTA/FRENCH valve (small valve).
Valve length : 40mm.

Weight:

20x1-1/8":
20x1-3/8": 
20x1.5-1.75": 138g / 4.864 Ounces
20x1.95-2.125": 146g / 5.152 Ounces

24x1-1/8": 86g / 3.04oz
24x1.5-1.75": 160g / 5.632 Ounces