It’s use to take circular samples of the diameter of the different sizes of the stainless steel tubing in body surface Examples : Skin , ( MUCOSA) to make the histologic , bacteriologic or (MICOLOGICO) studies. The more used sizes are 2 to 6 mm. The length of the device is between 7 to 9 cm. The plastic support like also the stainless steel tubing are hollow to allow by a plastic stikc to extract the sample who occasionally stay into the device.