The 39mm Stan's NoTubes rim tape is recommended for rims with an internal width of 37-39mm. The tape is air tight and non-porous, super thin and will not affect tire fit and does not leave a messy residue when it needs to be replaced.
When running tires with less than 45psi a single wrap of tape is enough, when running more than 45psi a double wrap of tape is required.
Please Note: Stan's rim tape by itself is not a tubeless conversion. Traditional (Non-BST) rims require the use of a rim strip to achieve a secure tubeless setup. Using only rim tape and sealant on a conventional rim can result in difficult inflation and "burping" issues.
Included in delivery: 1 roll with 9 meters