Perfume Studio 10ml /.33oz Frosted Green Glass Metal Ball Roll Ons (5 Roller Bottles) Perfume Studio Green Glass Roller Ball Set: 5 UNITS, 10 ml /.33 Oz each with Metal Ball Applicator. ONLY USE WITH PURE UNCUT OILS. DO NOT USE WITH FRACTIONATED COCONUT OIL BLENDS; METAL BALL WILL BECOME TOO LUBRICATED AND WILL POP OUT. Great For Pure/Uncut Essential and Body Oils Made in Italy Dark Green Glass Protects your oils from harmfull UV light