Museum Grade Insect Entomology Dissection Pins - 1.5"/38mm Length, Sizes 00 Through 3 (Packs of 100) (Multi Pack - 100 of Each Size (00, 1, 2, 3)) Premium, museum grade dissection pins Double black enamel coated with nylon gold heads Handmade of spring steel Available in Size 00, 1, 2, and 3 1.5" (38mm) Length