If you aren't using wire ferrules when installing amplifiers you're missing out on an easy way to have one of the cleanest installs out of all your friends! Using ferrules is a good idea for any install because its not jsut looks that make these worth it, Its the saftey factor as well! Wire Ferrules keep all wires inside and tight vs having frayed wires all over the place and trying to insert them into an amp! Aside from fusing these are a great touch for keeping your install clean and safe! Sold in packs of 25, you will be back to buy more!, Weight: 1.0 Pounds, Manufacturer: Sky High Car Audio