1Fuse holder has an attached waterproof cover. 2Beautiful appearance, it can provide detachable waterproof cover for any system, moisture and water proof, and prevent dust. 3Suitable for car, boats, RV's and more (DC current 12V). 4Easy installation on all kinds of vehicles, such as car, ATVs, UTVs, SUVs, 4X4, motorcycles, trucks, boats, RVs. 5Fit for ATC/ATO blade fuse of 1A, 2A, 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, 35A, 40A.