This puncher relieves the stress on the wrist during ID marking as it requires a very gentle pressure to cut a hole. The stainless steel puncher has a sloped edge which provides a cut rather than a punch, which minimizes animal discomfort. Now updated with Eppendorf holder. The little puck holds the lid of the Eppendorf tube, so the biopsy sample falls perfectly into the 1,5 mL tube. For your convenience we also sell these tubes in set of 100pcs. The ear puncher is autoclavable but should be lubricated afterwards for a long and trouble-free usage.