VAR tubeless rim tape
17mm is for rims from 15mm up to 18mm internal width.
21mm is for rims from 18mm up to 22mm internal width.
10m roll with tape two 700c/29er rims with two layers of tape.
The 33m roll will do many rims.
This tape is very flexible more so than stans tape so it is easy to get bubble free wraps of tape that conforms to the shape of the rim perfectly.