The Storage Jar Set offers convenient air-tight storage to keep your goods fresh. They stack neatly, and pair beautifully with our other products. The glass base is interchangeable with the glass base of our grinder. Combined, they offer a complete storing, grinding and serving system. The Storage Jar Set set includes 2 glass bases, with 1 black cap and 1 white cap. The contrasting caps are useful to color code your contents (add the colored cap set for additional cap options). These small jars hold roughly 1/8oz (3.5 grams) of flower each.