YONEX BG66 (Repulsion power) BADMINTON STRING
Lowest in 90 days Oregon Badminton Academy
$11.99
Price History
White $6.00
From NYDHI
NS620 string is designed by researchers with over 70 years of experience in badminton string technology, long before any of the major badminton brands existed. It's made of NYDHI proprietary technology inner core and high-quality microfilament outer core. It's designed for excellent repulsion with minimum tension loss.
NYDHI strings were tried by players and below URL has additional reviews:
https://www.badmintoncentral.com/forums/index.php?threads/nydhi-badminton-strings.188847/