The Miltex 33-31AA 1.0mm sterile disposable biopsy dermal punch has a blade made of OR grade German stainless steel. Features: Seamless, stainless steel, razor-sharp cutting edges eliminate torn or pulled biopsies Ribbed handle provides comfort and control Convenience of disposables, single-use Sizes clearly marked on each punch Individual color-coded blister packs Sterile, 5-year shelf life Each box contains 50 punches.