Hi there Mr.Clean;That looks like the things I saw in that article.Look to be simple and pretty durable.Have 2 Magnum 28s in a GP P-38 that need to be broken in sounds like they would work good in these,Like to get some time on them before the P-38 flys.You have used them?Thanks for the info I just didn't know where to look,Also like the thing they had about putting gear on them as for sport would be nice.Thanks much!