Description of Bussmann BP AGC 20 Acting Glass: A Reliable Fuse for Electrical Applications
Fast acting glass tube. 1/4 inches x 1-1/4 inches (6.3millimeter x 32millimeter). It has nickel-plated brass end cap construction. It has 250 volts AC ranking. It is UL listed and meets standard 248-18.
DANGER! They are rated for 32 VAC not 250 VAC as stated in the description. If you use it in a 110V socket, it may not open the circuit under overcurrent conditions, which is a major fire hazard!
A good replacement fuse for classic British cars (MGB, Triumph etc) is the same length and diameter as Lucas fuses. When replacing a 35A Lucas fuse. This is the closest match, the correct fuse is 17.5A. Try 15A first, if it blows use 20A.
This is exactly what is shown in the picture, Standard 20A AGC Fuses. Matchbox'. I'd rather have them in a matchbox type container as it's neater to store and Revain sells it the same way, but I could get them quicker this way. . They work exactly as expected and this is the brand name for this type of backup.