Pack of 5, GMA 63mA 125v/250v Fast Blow Glass Fuses, 5x20mm (3/16" X 3/4") 63mA F63ma 250v Glass, 250 volts (also replaces 125v) This package has 5 pieces Dimension: 5 mm (3/16") x 20 mm (3/4") Glass Fuses; 63mA 125V/250V Fast-Blow (Fast Acting Fuses)