The Bio Plas Bacti Cell Spreaders are unique products designed to greatly simplify and speed up bacterial culture work. There are two sizes: 30mm and 60mm wide, which allow these polypropylene Bacti Cell Spreaders to make it very easy to evenly distribute bacterial cells rapidly over an entire nutrient surface. The Bacti Cell Spreaders are individually wrapped (or available in bulk) and may be cleaned and autoclaved for multiple uses. Sturdy plastic provides uniform design Easy to manipulate without slippage Easy to manipulate around curves and into corners of prepared plates Always prevents agar surface tears Allows for even distribution of specimen Item Weight 2.2 pounds Manufacturer Bio Plas Item model number 6400 Package Dimensions 7.87 x 3.94 x 3.94 inches