Axygen MaxyClear microcentrifuge tubes are available in a variety of colors. Axygen Maxymum Recovery® surface and sterile options are also available. SnapLock microcentrifuge tubes have frosted cap surfaces and frosted side panels, ideal for labeling. Each cap features a piercing port in the center of the cap. Microcentrifuge tubes with no caps are available for some sizes. Axygen MaxyClear microcentrifuge tubes are available in a variety of colors. Axygen Maxymum Recovery® surface and sterile options are also available. SnapLock microcentrifuge tubes have frosted cap surfaces and frosted side panels, ideal for labeling. Each cap features a piercing port in the center of the cap. Microcentrifuge tubes with no caps are available for some sizes.