Our Insect Pins with black enamel finish provide a good quality pin at a substantially lower cost than other European brands. They are very similar to Austrian pins, manufactured from spring steel, with nylon heads, and finished black enamel for anti-rust protection. Made in Czechoslovakia. Length of 000-6 sizes is 38mm. Length of size 7 is 50mm. 100 pins per pack. If you are a beginner, sizes 2, 3, or 4 will accommodate the majority of your specimens.