Transfer bacterial cultures without risk of contamination with disposable needle/loops. Use loop end to uniformly streak gel surface; use needle for removal of colonies. Choose polypropylene (PP) needle/loops for more flexible handle use and acrylonitrile-butadiene-styrene (ABS) needle/loops for more rigid handle use. Come sterile for immediate use. 20 Needle/loops per zip bag. Lot-to-lot traceability on loops. Measures 200 mm L x 4 mm diameter. Pack of 1000.