New X37 stainless steel with high-toughness and resilience enables more precise designing. Higher kick performance close to rules limit allows a surprising longer flight distance.

The combination of new X37 material and carbon fiber crown successfully decreased a low center of gravity by1.8mm (19.2mm, fairway woods) and 0.7mm (utility clubs) comparing to previous model, which is important for clubs that hit off the ground. Transverse moment of inertia was increased by using a stainless steel material X37 with a higher specific weight for the body, resulting in enhanced straight flight. Both fairway woods and utility clubs achieve high trajectory due to an ultra-low center of gravity and more forgiving from the large moment of inertia.