3POINT RESONANCE TECHNOLOGY / The "center of gravity" is concentrated at the "hitting point" and "center of gravity". Maximum efficiency for maximum flight.

In general irons, the "center of gravity" where the face bends the most is often far away from the hitting point and center of gravity.

Therefore, we have effectively placed the ribs to bring the center of gravity closer to the face for maximum flight efficiency.

New material [X37] is used / The ultra-thin 1.1mm sole maximizes the repulsive performance at the hitting point.

A new material "X37" is adopted, which has high strength and tenacity and enables more precise design.

This has resulted in an ultra-thin sole of only 1.1 mm. Deflection at impact is increased, and the repulsive performance at the hitting point is further improved.

SPECIFICATION

Head inpres DRIVESTAR IRON

Material Body: X37, tungsten weight

Manufacturing Body: Precision Casting

Finish Nickel Chrome Plating

No. of clubs #5 #6 #7 #8 #9 PW AW AS SW

Loft Angle (°) 21 23 25 28 32 37 42 48 55

Lie angle (°) 60.75 61 61.25 61.5 61.75 62 62.5 62.5 62.75

Length (inches) 39 38.5 38 37.5 37 36.5 36 36 35.75

Shaft SPEEDER NX for Yamaha M423i Carbon

Club Weight (g) #5: 332 / #7: 345

Shaft weight (g) #5：46 / #7：48.5

Balance D0

Tone Medium

Grip Lamkin Cross line without logo

With back line (Diameter 60, approx. 40g)