Introduction of the clubs obtained in Japan: Mizuno TECHNIX BORA RS Irons, 9-piece set, 4-S, R, Arc Flow-α F67

 

These irons are part of the "TECHNIX BORA" series, which is Mizuno's entry-level line of golf equipment, with the "RS" designating a renewed model.

The key information confirmed from the search results is as follows:

• Model Name: Mizuno TECHNIX BORA RS Irons

• Set Composition: 9-piece set (It appears the most common composition is from the 4-iron through the Sand Wedge (S). Your indicated "4-S" is presumed to be this composition.)

• Shaft:

• Flex: R (Regular)

• Shaft Name: Arc Flow-α F67 (sometimes written as "F-67")

• Material: Believed to be an original carbon shaft.

• Key Specifications (Reference value for 3I):

• Length: 38.25 inches

• Weight: 375g

• Swing Weight (Balance): C-8

• Feature: It seems to have been marketed as a light and easy-to-swing entry-level model.

• Note: The "TECHNIX" brand is also used for soft tennis rackets and other products, consistently positioning them as "lightweight, yet easy-to-swing entry-level models."

These irons are considered suitable for golfers who are just starting out or those who prefer lighter clubs.