Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility

Purchased for vision therapy at home. Our OT commented that this was a good quality product as the beads don’t slide down the string when using.

Def recommend I love that my son can pick which color to use and it does exactly what is intended for. Well worth the price

There's not much you can say about five beads on a string. It's a good value for the money and serves the purpose.

I bought enough of these for our whole softball team. The girls are using these in combination with hitting "golf ball" whiffle balls and a sklz power stick to train them to focus more on the ball. It appears to be working really well.

I love these Brock strings, they are exactly what I was looking for. Unfortunately, I tried to take all but one bead off and now I can’t get any back on. Good thing this came in a pack of 3.

Nice Product

Just what I was looking for. I am a sports performance coach looking to improve visual skills and the Brock string is just for that. Came with three strings. The beads move easily but don’t slide when you hold the string high or low. If you’re looking for a Brock string look no further, this is what you want! Going to be purchasing more soon

Sturdy colorful string, perfect bead fit, same bead color order as at Doctor's.