Slime 30027 Lite Smart Tube, Schrader Valve (26 x 1.75-2.125") Pre-installed with Slime Sealant to provide maximum puncture protection and prevent flat tires on your bike Minimal added weight at 219 grams Valve type: Schrader 48mm Fits tire sizes: 26 x 1.752.125 Designed to seal tread area punctures