The Studio Design 3.5 is a combination of a natural, flowing design coupled with a mechanical neck that affords a clean view of the ball at address. The 3.5 is a handmade looking, blade style shape with rounded heel and toe and a pocket in the cavity. This design, introduced in 2003 has a short, slant neck giving the putter 1⁄4 toe flow for optimal performance. The Black Pearl finish, a dark smoke color with iridescent tones, gives the putter great sound, feel and feedback all the while, being nearly maintenance free.