Specifications: Material: stainless steel, Length: 1.5cm, Diameter: 0.27-0.71mm, Quantity: 100 pieces, Application: making small to medium size insect specimen. Describe: 100 Pieces Stainless Steel Insect Pins Specimen Pins for School Lab Entomology Dissection, Made of stainless steel material for long lasting use, Good for making collection only specimen, Suitable for making small to medium size insect specimen.