Each of the six Studio Stock Series putter shapes (3 blades and 2 mallets plus one left-handed mallet) is milled from a single piece of 303 stainless steel with Roll Control Face grooves designed to get a true roll on the ball more quickly. Head weights of 358 grams are consistent for each model as is the loft of 3-degrees. Each has a Diamond Blast/Polish finish to cut glare at address. Retail price is $450 each.