Bussmann ABC-15BC 15 Amp Fast Acting Ceramic Tube Elect. Fuse, 250V 1-In Bag UL Listed Fast-acting, ceramic tube Optional axial leads available 1/4-Inch x 1-1/4-Inch (6.4 x 31.7mm) physical size Ceramic tube, nickel-plated brass end cap construction UL Listed product meets standard 248-14