A 1.5 mm dermastamp instead of a one-liner roller would be more suitable in your case but you can use a one liner as well.
If you have just a few stretch marks, treat them all in one session (every 4-5 weeks). First, use the one liner roller on each individual stretch mark: Roll each stretch mark very densely (at least 10 times). After you will have rolled all of them with the one liner, roll the entire area with your regular 1.5 mm dermaroller.
If you have too many stretch marks to treat them thoroughly and densely in a single session, you have to spread it out over multiple treatments. In this case you should do it the other way round. First, roll the entire area with your regular 1.5 mm dermaroller (every 4-5 weeks). When the redness is gone (in a few days) and you can see clearly the individual stretch marks, roll each individual stretch mark densely (at least 10 times) with the one liner roller. Roll every day (or so) a few stretch marks, until they are all done.
The reason I introduced this "spread out" treatment is that I recommend combining stamping/needling and rolling. Needling and stamping is very laborious and it must be done thoroughly and densely. Nearly noone has the time to do all stretch marks in one session.
Related subject:
https://http://forums.owndoc.com/dermarolling-microneedling/Stretch-Marks-individual-needling