Imported, Good quality, Btwin make, Compatible for 16" x 1.7" to 2.2" cycle tyres and wheels, Schrader Valve (AV) Valve length 33mm/ 33L Material : High Quality Butyl Tube, Leak tested by manufacturer, Superior air retention, Quality : High, Colour : Black, Weight per tube :122 gms approx., tube thickness : 0.87mm approx, Valve type : Schrader 33 mm/ 33L length Package contains: 1 pc 16" x 1.7" / 2.2" Cycle Bicycle Tube Schrader (AV) 33mm length Usually ships within 24 hours, Always buy from Schrodinger for genuine service!