I do a lot of work in a wet lab and I wanted a way to be able to hold various test tubes. I designed a rack that can hold 4 different size test tubes. I not only use this to hold the tubes with my samples but also utilize this as a drying rack!

Key Features

• Can hold 4 different types of test tubes
• Raised lip making it easy to remove test tubes
• Stabilizers to make sure the rack stays leveled
• No supports required to print
• Small and large sizes available

Let me know down in the comments if you'd like a version with custom sized holes!