The valve on this inner tube is a 40mm Presta valve SV28. Impac is produced by Schwalbe, These Impac inner tubes are made from high quality butyl material, butyl is an elastic and airtight synthetic rubber.

Brand: Impac Schwalbe
Wheel Size: 28"
Valve Type: Presta Valve
Tube Size: 28-32c
Material: butyl, Rubber
Set Includes: inner tube, inner tubes
Valve Length: 40mm
Unit Quantity: 10
Number of Items: 2
Item Weight: 250g
Colour: Black
Part Type: Tube