Here you will find some info in choosing the right Victor racquet. Understand what the weight, grip, stiffness, response, tension and balance definition in Victor Racquets technology. 

WEIGHT

2U stands for 90-94.9 grams
3U stands for 85-89.9 grams
4U stands for 80-84.9 grams
5U stands for 75-79.9 grams

“U” is the unit of the badminton racket weight. All are based on unstrung weight.

GRIP

VICTOR releases new grip size indicator in 2013, provides consumers an easier way to select the badminton racket that best suits their needs.
(“G” is unit of grip perimeter.)

TENSION

String tension, divided into lateral line H and vertical line V tension, is the safety factor of a badminton racket frame, the maximum poundage that can be safety reached when a racket is strung. For example, H≤30lb V≤28lb means that, when a racket is strung, the highest lateral line tension is 30 lb and the highest vertical line tension is 28 lb.

BALANCE

The badminton racket balance point is the distance from the front sleeve to the fulcrum, the higher the value the heavier the head is (HH, head heavy), and the smaller the value the lighter the head (HL, head light).

STIFFNESS

The stiffness of the shaft affects the feeling when you play badminton. When a soft racket (shaft) is used, the shuttlecock stays on the racket face for a longer time and is easier to control. Soft rackets are suited for use by beginners. When a stiff racket hits a shuttlecock, accuracy and efficiency of power delivery are better than with a soft racket; stiff rackets are best used only by advanced players.

RESPONSE

The Response Indicator is classified into 10 levels which shows on the racket’s shaft. The dot closes left side with stiff response, while right side with flexible response.

Reference from: http://www.victorsport.com/product_content_36.html