Round-bottom flasks of any size up to 10 liters are cradled securely in the stepped concentric rings of this support. Supports are stackable, affording the ability to create a stable base at various heights. Polypropylene construction is not affected by spilled acids, alkalies or other corrosive liquids. Steam autoclavable at 121°C (250°F). Dimensions: 171mm (63/4") in diameter x 51mm (2") high. Per each, 6 per case.