IMPAC is the name economical tire and tube range that have been produced by SCHWALBE to compete with other economical brands, which quality isn't always very high. IMPAC can offer better quality at low prices. Quality inner tube for 29"/27.5" MTB bicycle tires with standard AV valve.
For 29" tire sizes from 29x1.75 to 29x2.35 (from 47-622 to 60-622)
For 27.5" tire sizes from 27.5x2.00 to 27.5x2.35 (from 50-584 to 60-584)
Also fits 28x1-1/2 (40-635)
Valve: Schrader (AV) with thread
Valve length: 40 mm
Weight: 220 g