Premier Tischler Biopsy Punch Forceps 9086420. This clinical standard features a unique bite mechanism which grasps tissue and holds it securely during excision. Exact Bite for Clean Tissue Extraction. Swivel Lock to Ensure Sample Retention. Firm Hold of Biopsy Sample for Confident Procedures. Spring Grip for Optimal Handling. Popular 10" Length. Bite: 7mm x 3mm.