Product review (5 stars): Excellent Little Device
I have actually purchased two of these inlets.  They are the same type of connector used for power on most computers.  I was able to use an old computer power cable with this.  I was pleasantly surprised at the quality of these considering the low price point.  The contacts can be soldered to or you can use quick disconnect lugs.

These inlets do not include a fuse, which is required to use the unit.  The contacts are arranged so that the current must flow through the fuse.  But these fuses are easy to find, standard fuses.  They're about $0.15 each from an electronics supplier.  Some people don't realize that the reason a fuse isn't included is because of the wide range capacities.  If you're buying this, then you probably have some knowledge of electronics and it's easier for you to determine the best option for your application.