Hardened Picture Pins - Brass, Nickel, Knurled, Shim, Blued - 17-26mm. - These pins are 25mm long. Steel, with oval head and round cut point. - These picture pins are 26mm long, 1.5mm dia. Steel, with a knurled brass head, type B, 4.3mm dia, 4.6mm tall, pressed on.
