The handle on a Holdfast™ cylinder provides a secure, solid grip for superior control.  The result is safer, more convenient pouring.  The one-piece polypropylene cylinder will not create a meniscus.  The "Total Contained, Total Delivered" double scale is accurate and easy to read, and the hexagonal base prevents tipping and rolling.  The hand opening is 3" x 1-1/8" (89mm x 29mm).  Steam autoclavable at 250°F (121°C).