Hardened sharp pins with a knurled brass head Type A.
Often used on their own to hang small pictures. They are best used with picture hooks which are specially shaped to guide the pin into the wall at the optimum angle.
These picture pins are 24mm long, 1.34mm dia. Steel, a knurled brass head, type A, 5.5mm dia and 3.7mm long, pressed on. Pin is black with sharp point. In packs of 1000.