Product Features: - 100% borosilicate glass - Metallic finish - 3-hole perc - Available in assorted colours This mini rig is a lean, mean, smoking machine. The sparkling metallic finish is made with 100% borosilicate glass and accompanied by a 3-hole perc to ensure a clean-tasting smoking experience. The 5.5" Metallic Finish Concentrate Rig is available in assorted colours.