New Martin SPB9 Y Pitching Machine Yellow Baseballs (1 dz) 9 Inch Size:9 Inch Ultra Lightweight shaft that still has 13 D(M) US:Gray Black White Ultra Lightweight shaft that still has the strength to hold up against big time hits 7% lighter than previous Surgeon models Precision profile (extreme concanve octagon) for great control Targeted accufinish for permanent and aggressive grip to handle in areas used the most The Tommy Armour TA1 hybrid features a Maraging Steel Cup Face construction to generate maximum ball speed across the face and a lightweight Carbon Fiber Crown with built in Surface Disruptors to elevate club head speed and distance Sting Free & Great Pop Our dimpled optic yellow baseballs are excellent for commercial and backyard use and sold by the dozen