Set having: - at least one body rail of a single-extension pull-out and - at least one drawer rail and - an arrangement for a single-extension pull-out, having at least two rails (5, 6, 7) guided telescopically one on the other, the arrangement having at least one roller and at least one roller axis and also at least one roller carrier body, and the roller being mounted rotatably on the roller axis and the roller axis being arranged, in particular fixedly, on the roller carrier body, and the roller carrier body being a component separate from all the rails (5, 7) of the single-extension pull-out, characterised in that the roller carrier body has at least one first connecting device for fastening the roller carrier body to the drawer rail and in that the roller carrier body has at least one second connecting device for, preferably releasable, fastening of the roller carrier body to the body rail of the single-extension pull-out, the arrangement being pre-mounted by means of the second connecting device nondestructively releasably on another component of the body rail of the single-extension pull-out, and the set having at least one body rail of a full-extension pull-out and a middle rail of the full-extension pull-out, the drawer rail being capable of being installed both in the body rail of the single-extension pull-out and in the middle rail of the full-extension pull-out. - at least one body rail of a single-extension pull-out and - at least one drawer rail and - an arrangement for a single-extension pull-out, having at least two rails (5, 6, 7) guided telescopically one on the other, the arrangement having at least one roller and at least one roller axis and also at least one roller carrier body, and the roller being mounted rotatably on the roller axis and the roller axis being arranged, in particular fixedly, on the roller carrier body, and the roller carrier body being a component separate from all the rails (5, 7) of the single-extension pull-out, characterised in that the roller carrier body has at least one first connecting device for fastening the roller carrier body to the drawer rail and in that the roller carrier body has at least one second connecting device for, preferably releasable, fastening of the roller carrier body to the body rail of the single-extension pull-out, the arrangement being pre-mounted by means of the second connecting device nondestructively releasably on another component of the body rail of the single-extension pull-out, and the set having at least one body rail of a full-extension pull-out and a middle rail of the full-extension pull-out, the drawer rail being capable of being installed both in the body rail of the single-extension pull-out and in the middle rail of the full-extension pull-out. the roller carrier body has at least one first connecting device for fastening the roller carrier body to the drawer rail and in that the roller carrier body has at least one second connecting device for, preferably releasable, fastening of the roller carrier body to the body rail of the single-extension pull-out, the arrangement being pre-mounted by means of the second connecting device nondestructively releasably on another component of the body rail of the single-extension pull-out, and the set having at least one body rail of a full-extension pull-out and a middle rail of the full-extension pull-out, the drawer rail being capable of being installed both in the body rail of the single-extension pull-out and in the middle rail of the full-extension pull-out.