27,5" tube from Schwalbe with sclaverand valve.

27,5", for extra wide freeride-tires, downhill

54-584 27.5 x 2.10
57-584 27.5 x 2.25
60-584 27.5 x 2.35
62-584 27.5 x 2.40
65-584 27.5 x 2.60
70-584 27.5 x 2.75
75-584 27.5 x 3.00

Weight: 200 g 

40 mm Sclaverand valve

Information on EU Regulation GPSR 

Name of the manufacturer: Ralf Bohle GmbH
Postal address of the manufacturer: Otto-Hahn-Str. 1, 51580 Reichshof, DE 
Electronic address of the manufacturer: info@schwalbe.com