Fits Models: Smith & Wesson J-Frame revolvers... @@ Airlite, Airweight, Bodyguard, Chiefs Special, Centennial, Ladysmith, Models 36, 37, 38, 49, 60, 63, 317, 331, 332, 337, 340, 342, 351, 360, 442, 637, 638, 640, 642, 649, 651 and 940 with round-butt...