Justin Thomas has used a Scotty Cameron Phantom X 5.5 prototype putter over the last several years, which he has described as the "best putter he's ever had." The putter has a mallet head with a single bend shaft and high-tech multi-material construction, including a lightweight aluminum soleplate and 303 stainless steel body. Thomas worked closely with Scotty Cameron to design a putter that would suit his stroke and preferences, and he has credited the putter with helping him improve his consistency on the greens. Earlier this year (January) he was seen with an Anser-style blade putter and at the Masters, he was using a Phantom X 5 model.