A guide body for a cable guide includes a stem having an upper end, a lower end, and a longitudinal axis extending between the upper and lower ends, and base adjacent the lower end of the stem. The guide body is rotatable about the longitudinal axis of the stem to configure the base from an unlocked orientation relative to the wire basket cable tray, in which the base is receivable in and removable from a floor opening of a wire basket cable tray, and a locked orientation relative to the wire basket cable tray, in which the base is secured to the wire basket cable tray in the floor opening. A snap-fit component attaches a roller retainer to a stem body by snap-fit connection when a roller is received on the stem body to retain the roller on the stem body.