Nixie Metal Plug Trainer Set Blue Metallic from Global Novelties. Nixie Metal Plug Trainer Set Pink Metallic from Global Novelties. Adorn your derriere with a dazzling blue jeweled anal plug! Smooth plated slick metal finish plugs in light weight Aluminum alloy. Graduated sizes in this anal training kit let you start small and train your way up to more adventurous pleasures. Tapered tip and seamless smooth, seamless material assure an easy insertion. Free bonus storage bags for each plug. Easily warmed or cooled for temperature play. Body safe and eco-friendly. Small Butt Plug measures 2.75 inches by 1 inches, medium butt plug 3.2 inches by 1.3 inches and a large butt plug measures 3.75 inches by 1.57 inches. Categories: Anal Toys, Small, Medium Butt Plugs, Sex Toys for Couples, Sensual Kits, Anal Trainer Kits. 2022.