The Graham Field-3911 M series provides heavy-duty finger protection marketed under the Grafco brand for industrial and non-exam applications. These cots are made from a reinforced natural rubber latex, making them significantly thicker and more durable than standard finger cots. They are specifically engineered for environments where extra puncture resistance and a secure grip are necessary, such as during detailed assembly work or when handling abrasive materials. The medium 2 sizing ensures a tight, ergonomic fit that maintains tactile sensitivity while providing a robust barrier against dirt and moisture.