Specimen Securement: Specimen pins secure insects to their specimen cases, maintaining their natural position in display cases and other containers. Effectively preserving the insect's morphology and structure, researchers can better observe its detailed features. The sharp tip and rounded handles on both ends make the pin easy to grip. The tip is finely ground to minimize scratches on the insect's body and avoid damaging vital structures. Rust-Resistant : Made of stainless steel, the specimen pins are resistant to rust or deformation. Their excellent durability and rust resistance ensure long-term use in the preparation and preservation of insect specimens. Suitable for securing various insect specimens and collections, including butterflies, moths, and tridacna. They are popular among insect enthusiasts, biology programs, and schools. Specification: Material:stainless Size:Length 40mm Width 0.32mm Color:as picture Package include: 100pcs/box