These supports are for storage, drying, and draining of graduated cylinders. Supports will handle 25 glass cylinders from 5 to 1000 ml in size. For example, support will hold three 5 or 10 ml cylinders, four 25 ml, eight 50 ml, three 100 ml, three 250 ml, two 500 ml, and two 1000 ml. Resilient neoprene coating lessens expensive breakage. Aluminum pan catches drainage. Drain pan diameter is 20"". Height of support is 18"".