The Bell Standard self-sealing tube is an all-purpose robust product. The rubber used in its manufacture is mold cured that give sidewall consistency and mitigate blowouts due to high pressure. The valve is a 40mm, capped Schrader type and the tube weight is 340g but usually depends on tire size. The inner tube is reliably tested and high quality ensured. The self-sealant is puncture resistant (or thorn-resistant) and automatically plugs puncture holes of ⅛ “ effectively.
