215700000 Smith & Wesson J Frame All Models New Style S.S. Thumb piece

215700000 Smith & Wesson New J Frame Many Models New Style Stainless Steel Thumb piece No Nut. Fits All J Frame Models Old Style And New Style. FITS: 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 637, .38; 638, .38; 640, .38; 640 Magnum, .357; 642, .38; 649, .38, .357; 650/651, .22 Mag; 940, 9mm