E-50 Series
MTM has two styles of ammo handgun slip boxes, the E-50 and J-50 series. They both hold 50 rounds. The E-50 series has a non-textured surface and has square holes go to Next Product for information on the J-50 series.
FITS:
.38 Spec., .357 MAG, .38 Auto Colt

Length (inches)	9.75
Width (inches)	7.375
Depth (inches)	8.125