This is a collection of 10 crimp type connectors with hard covers. Thses are the type used by Rover on their cars fuse box until 1995 during the 1980/90s.

5 are the smaller diameter and the other 5 are the larger diameter used by Rover to connect heavier wires or when they wanted to run two wires from one connector on the fuse box. These are usually badly corroded and a common basis for electrical problems.

These are hard to find and if you are concerned about originality these are for you