Biopsy Punches are stainless steel, single-use sterile tools for accurate and gentle skin biopsies. Since it reaches sufficiently deep and involves a sufficiently wide excision of the cutis, the punch biopsy provides a representative cross-section of the entire cutis. The Biopsy Punches are also available with a patented plunger system in the most common sizes. The benefit of these special punches is that they guarantee a simple way of ejecting lodged tissue using the plunger system. The punch's plunger system is similar to a ball pen.