8 oz Paper Mixing Cups (Medium)

3M™ Glass Bubbles K20 – Versatile, economical hollow glass spheres made from water-resistant, chemically stable soda-lime borosilicate glass. Non-combustible, non-porous, and resin-compatible, they reduce weight, maintain stable viscosity, and offer a long shelf life. Ideal for underwater use and a superior alternative to fillers like silica, talc, or clay.