Dankung's 3060 for our 6mm Marksman slingshot frames was a very, very tight fit and really hard to get on, but works when you get them on. Unfortunately the 1842 and 2040 we bought most of was way too small for the 6mm Marksman frame and we can not use them at all:( now I need to order some new tubing and also material to make our own flatbands. I think i need to go up one size from the Black 3060 I bought to make them easier to get on the slingshots. 4070 maybe
I shoot paintball with Marksman slingshot. The rubber seem fantastic! Compared to the standard we have used(Marksman band) it was night and day:) Tubing and flatbands both have their good and bad traits. The flatbands seem to generate much more power compared to the force of the pull, but they do tend twist after the shoot and takes a bit of extra time to reset and reload. The tubing just seem to reset by itself but lack the power of the flatbands.