[COD] HOT SALE Ship within 24 hours 18mm Diameter Brock String Vision Convergence Insufficiency Training Tool
[COD] HOT SALE Ship within 24 hours 18mm Diameter Brock String Vision Convergence Insufficiency Training Tool
Description:
Brock String - used in fixing convergence insufficiency and sports training.
The basic purpose of the Brock String is to develop good binocular functions; in words to get both eyes working together well. This activity teaches convergence - the ability to point both eyes more accurately at a target.
Size:beads diameter:1.8cm(0.7'') Rope length:260cm(102'')
Package includes:a cord, three beads, and one case
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the thing. The measurement allowed error is + - 1-3cm.
EHBqna 3PF
Seller ratings 99%
![[COD] HOT SALE Ship within 24 hours 18mm Diameter Brock String Vision Convergence Insufficiency Training Tool](https://img.lazcdn.com/g/p/7d4de8b0a30931384b69add5f8466dd5.jpg_300x300q80.jpg)
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