Axygen HybridRack Eco Friendly Tips are supplied in sustainable paperboard racks that help reduce the amount of plastic used in each case by about 70%. Each case is sterilized, and each rack is individually sealed. The universal fit 10 µL tip is extended length to easily reach to the bottom of deep well plates or microcentrifuge tubes and features graduation lines at 2 µL, 5 µL, and 10 µL.