Simply push the wire thru then bend it backwards over the swiveling member and tighten. These are by far more secure than set screws, no solder, no crimping; just goo ole fashioned torque.

Fuse holder works great and is very flexible and easy to work with, connections are good and solid.

Construction seems to be typical with some ANL fuse holders. O rings where the wire goes into the fuse holder to protect from the elements, along with o rings for the end caps. What threw me for a loop was, I had to solder the wires into the ends. A good thing about the changeable ends (1/0 or 4 ga) is that they swivel. The solder thing just isn't sitting well with me. If you need to change/upgrade down the road, this will become an inconvenience.

Im totally pissed off at this product. A set screw is way better han this to hold down your wire. Must be even cheaper to make. Anyway should be a 10 minute job but instead took more than an hour screwing with it and it still doesnt hold the wire secure. Wasted 10 bucks