The C25 Digital Multimeter Case is zippered with padding and inside pocket. The C25 meter case fits the 21/23/26/75/77/79/27/70/73 Series III, 175/177/179/83/85/87 Series III, 87/89 IV, 83/87 Series V, 187/189 DMMs, 321/322 Clamp meters, 1503/1507/1577 and 1587 Insulation Testers, 50S/50D/51/52/53 and 54 Series II and 61 thermometers, and 714/715/716/717/725/787 and 789 Process Meters.