These entomological pins are made of uncoated fine steel which makes their fineness easier to spot!
They are good for delicate fabrics and suit those who prefer a longer thin pin.
Pins come in two thicknesses, Size 1 and Size 0 and in a screw top metal cannister.
Size 0 are 0.35 mm thick 38 mm long.
Size 1 are 0.4 mm thick 38 mm long.