Grooves are deepest in the middle and get gradually shallower to the perimeter of the insert. This counteracts normal loss in energy or ballspeed to ensuremore-consistent ball velocity across the putter face, even if the ball is struck off-center toward the heel or toe.PING studies show a substantial increase in ball-speed consistency measured at nine points on the face.

USGA-conforming shaft adjusts 31”–38” to optimize the proper fit for more consistency.

Features:

• Variable-depth-groove insert
• Big increase in ball-speed consistency across face
• 6061 aerospace-grade aluminum insert
• Adjustable-shaft range (31"-38")
• Black PVD finish
• 12 Fit For Stroke™ models
• Slight arc models = Anser 2, B60, Shea, Tomcat S, Anser 2 B (adjustable belly)
• Strong arc models = ZB S, Shea H
• Straight models = Piper C, Tatum, Carefree L (adjustable long)
• All stroke types available = Grayhawk, Senita
• Blade and mallet styles
• Mid-size PP58 cord grip