These 4.5 inch stir sticks were carefully crafted by an Acrylic Pouring Artist for Acrylic Pouring Artists - 100% from the ground up and is copyright protected. I ensured that it is durable, sturdy and functional, designed around my 6+ years of experience as an Acrylic Pouring Artist. The unique honeycomb design helps to stir the paint until it's nice and smooth. These stir sticks are sturdy yet flexible to help scrape the sides of the cup. They are easy to clean and reusable. This size stir stick goes perfect with the 1 ounce mixing cups! Sold separately Measures 4.5 inches long by .5 inches wide. Comes in a set of 4. Choose either a variety of colors or black only. Here's another acrylic pouring artist using these stir sticks https://youtu.be/FjBYA5fJrHU Why did we choose PLA Filament to 3D print? We chose PLA primarily because its biodegradable. When its practical, we should all do a little to reduce our carbon footprint :) Also, because its strong and resists warping. ABOUT PLA: It’s a hard material, but PLA is not a perfect material and, just like every other plastic, has some disadvantages. The low melting temperature also means low-temperature resistance. Parts start to lose mechanical strength at temperatures over 60 °C. Never put these in the dishwasher or soak them in scalding hot water. Clean soon after using. © COPYRIGHT PROTECTED! Tracie Reed Designs, INC 2021