Our best snap-on caps! The caps are available in 13mm and 16mm sizes and designed specifically for recapping blood drawing tubes, glass test tubes and plastic culture tubes. These colorful snap-on closures feature a single thumb tab that allows the tubes to be nested closely in test tube racks and provides easy removal of the snap cap. They are precision molded from low-density polyethylene (LDPE) and maintain a tight seal during centrifugation, agitation and refrigeration procedures.

Packaged: 1000 per bag.