These are 3-D printed dye bottle holders that we build in house! These are made from very high quality thermal plastic and will provide many years of use. After several variants of these this is my favorite due to it's larger round base to prevent spillage. Its made to hold both of the standard dye bottles Fiebings and Eco-Flo. It will accommodate a wool dobber, paintbrush or syringe if you're a airbrusher like me. This is quickly becoming a indispensable item in my shop.