I have a thing to mount on the wall. These things were coming with it. To figure out how to apply them properly I has to know how these things and their parts are called.
There 10mm inscription on the yellow sleeve and numbers 12 and 10x60 on the blue.
Those look like two different kinds of anchors. One for masonry (self-contained with metal sleeve), and the other for drywall (blue sleeves and lag screws).
You'll select the appropriate anchor for the surface you're mounting to and drill an appropriate sized hole. For masonry, you'll insert the entire thing through whatever you're mounting (some type of bracket?), into the hole. For drywall, you'll insert the blue sleeve into the hole, then insert the lag screw through the object to be mounted, into the sleeve.
In either case, tightening the head of the anchor or screw will cause the outer part of the anchor (metal or plastic sleeve) to expand and fit tightly in or behind the hole, securing your object.