Toe hang is how much the toe of the putter head drops when the shaft is balanced horizontally, measured in degrees.
Total distance is carry distance plus any roll after landing (or minus backward roll on high-spin shots).
Total weight is the fully built club's overall weight. There's no USGA or R&A limit on total club weight.
Urethane refers to the outer cover material of the ball. Urethane covers generally produce more spin and cost more to manufacture than other cover materials.
Bounce is the angle between a wedge's leading edge and the lowest point of its sole, which controls how the club interacts with turf, rough, or sand.
Wedge grind is the shaping of a wedge's sole — removing specific material to change how the club interacts with the ground for different shot types and turf conditions.
A zero-torque putter aligns the shaft axis directly with the putter head's center of gravity, keeping the face more square to the stroke path throughout.