Due to the purity of the rubber compound and the uniform wall thickness, the standard hose from RFR is very reliable and resistant. Features - MTB 27.5" Tube Super Lite 0.73mm: Lighter wheels just feel better, period. Our inner tubes weigh less than standard but perform just as well. Keep your wheels rolling the way they were designed to. Product features Use: MTB 27.5" Dimensions: 27.5 x 1.75 to 27.5 x 2.25 ETRTO: 47/57-584 Valve type: AV (Auto valve / Schrader) Valve Length: 40mm Size & Valve type (choose variant) 47/57-584 AV 40mm Material Rubber Color black Weight (manufacturer information) 223g (47/57-584 AV 40mm)