Pack of 20 pieces, DMM-44/100 (DMM 44 100) 440mA (0.4A) 1000V Fluke 943121 Digital multimeter replacement Fuse 400mA (0.4A) 1000V Fuses, Fast Acting 20 pieces of Digital Multimeter Replacement Fuse per package Dimension: 34.9 mm (1.375 In.) L x 10 mm (0.406 In.) D Fluke 943121 Construction - Melamine Tube