Gun Grip Supply Smith & Wesson J Frame Grips Round Butt White Pearl Smith & Wesson J Frame Round Butt Grips. Imitation White Pearl. With Silver Colored S&W Medallions. Fits the Round Butt. Models: 36, 37, 638, 60, 317, 331, 332, 337PD, 340, 340PD, 342, 342PD, 360PD, 360, 442, 63, 637, 640, 642, 649 Etc. Made in USA.