MBP 0.2 mL Clear Thin Wall PCR Tube without Cap by Molecular Biology Products is an individual polypropylene PCR tube with a thin wall for efficient heat transfer and a neck diameter of 5.965 ± 0.05 mm. With no attached cap, it pairs with separate strip caps or sealing mats. It fits standard 0.2 mL thermal cycler blocks and is packed 1,000 tubes per unit.