Available in two sizes these MasterVision interchangeable characters are a versatile solution that can be used with MasterVision magnetic letter boards or on any magnetic surface board. Over 70 characters and symbols.Features. MasterVision interchangeable characters are designed to be used with our grooved surface magnetic letter boards.. Simple to use they easily slide and hold in position.. Can be used on any magnetic surface great to label file cabinet drawers.. Over 70 letters and characters per set.. Dimension - 0.125 x 4 x 5 in.. Item Weight - 0.5 lbs.