Per Google. Hope It helps.
Both the SFE and AGC are glass fuses with a meltable link within the glass.
The SFE fuses all measure 1/4" in diameter. The length is determined by the amperage rating, which varies from 5/8" in length (4 amp.) to 1 7/16" in length (30 amp). The SFE fuse is also designated as "size rejecting" because the size differences are related to the amperage rating and tends to prevent interchanging different amperage ratings.
The AGC fuse measures 1 1/4" in length and the diameter is 1/4" for all amperage ratings.
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