I purchased a bag of these, and I can definitely say that tees are not all the same. These tees tend to break more easily than your standard hardwood tees. They do last a bit better than ultra-cheap tees found at your neighborhood ultra-superstore, but they are certainly not the most durable I've used.I do like the color stripe, as it gives me a better reference point for ball height. They get the fourth star for that.
These tees are perfect length. Find your length using the blue line and become more consistent with your drives. I put mine in the ground to where i barely see the top of the blue line.