Vasos de plástico para saltar con forma de caballo (juego de 2)

I've been buying these for about 2 years now. None have broken. They fit my homemade standards better than the metal ones. A plus is that I can flip them over to use with planks.

"These cups won't fit normal 3 1/2"" x 3 1/2"" standards. The hole and pin are too shallow and you will have difficulty at best or at worst not be able to fit the cup to the standard. These are made for a metric standard. Don't buy. "

I bought these because they would not rust like metal. We have used them for 6 months and all but one pair are broken. They aren't worth the extra $$ over the metal.