Dan Wesson Revolvers come in 4 frame sizes. Small, Large, Super-Mag, and Lil-Dan. Small frame revolvers have a square grip stud and cover calibers 22, 22Mag, 32, 32-20, 38, 357mag. Large frame revolvers have a round grip stud and cover 360, 41Mag, 44Mag, 45Colt, 460Roland. Super-Mag revolvers cover 357Maximum, 375, 414, and 445. Large and Super-Mag frame revolvers use the same size grips. Lil-Dan revolvers have a grip size all its own.