These pipette tips are precision molded from high quality polypropylene. These tips are designed for used with Eppendorf pipettors. This economical and environmentally friendly packaging provides 10 fully loaded rack inserts ready for insertion into your empty racks. Each stack of 5 rack inserts sits in one autoclavable rack base and one rack top. Each insert contains 96 tips, for a total of 960 tips per set.