This storage rack is for all of the tree oil loving folks! Frankincense Northern Lights Black Spruce Pine Cypress Copiaba Douglas Fir Idaho Black Spruce Tea Tree Eucalyptus and more. If you are a tree oil loving person, this shelf is for you. The triangle shelf is handmade from solid maple tree wood making it our sturdiest, strongest shelf we offer. Wood + Oils is laser engraved in small writing on the bottom of the shelf. This shelf comes with hanging hardware installed in the back of the shelf for easy walk mounting. The most bottom layer is tall enough to hold most 10mL roll on bottles, including our wood and oils cube roller. Shipping for this shelf is priority mail, flat rate shipping price reflected in your cart at checkout.