Titleist Vokey Design SM4
Inspired by the 2010 USGA rule limiting groove volume and edge sharpness, SM4 (“Spin Milled”) wedges are built with 17 individually made grooves. (More grooves mean that more edges contact the ball.) Each groove is inspected at the factory to ensure that it doesn’t exceed USGA limits. The 8620 carbon steel construction helps create a clubface that can be CNC-machined until it’s totally flat, has maximum face roughness (within the Rules of Golf), and can be heat treated to increase groove durability. Available in five sole grinds and three finish options (tour chrome, black nickel or oil can).