1/4 inch x 1-1/4 inch. Contents: (5) AGC-30. IR 10000A, 125Vac. IR 100A, 250Vac. All fuses in this kit for auto, marine, or electronics applications up to 250 Vac. Before replacing fuse, remedy cause of opening and replace with same type and amp rating. UL listed. Eaton.com/BussmannConsumer. Made in Taiwan.