The Quik Thief is used to gather small (100 ml) samples for centrifuging or chemical work. It is made of solid brass with a closure system that opens with a snap of the wrist when you have it at the desired level. A 20 foot marked rope comes with the thief. The dimensions of the Quik Thief are 10.5 inches overall length, 7.25 inches from base to opening, The outer diameter of the cylinder is 1.25 inches. The weight is 1.25 pounds.