<p><b> Product Description </b></p><p><b><i> 24 (Pack) Stainless Steel Roller Ball Bottles, (24) 10ml Clear Glass Roller Ball Bottles, (24) Black Screw On Caps, (3) 3 ml Droppers, (1) Easy Fill Funnel, (1) Blue Top Opener. These bottles are perfect for perfume and essential oils. The beautiful Clear glass provides protection from potentially harmful light and the convenient size makes it perfect for travel/tsa safe! <p><b><i> How to use the Essential Oils Opener: <p><b><i> 1. Removing the Stainless Steel Roller Ball Reducer Insert: Put the edge of the opener underneath the reducer and push down. Reducer will slide out.<p><b><i> 2. Closing the stainless steel roller ball reducer insert: Once the reducer slides out, find the correct hole in the center of the opener that fits your stainless steel roller ball reducer. Place the correct hole on the top of reducer and press down. Or place the stainless steel roller ball reducer insert on the glass bottle and screw on the black cap to insert ball onto the bottle.