Iron Flat Head Pins, Cadmium Free & Nickel Free, Nickel Free, Golden ColorSize: about 0. 7mm thick, 28mm long, about 92pcs/11g.A jewelry-maker's staple, Flat Head Pins allow you to make earrings, pendants, links and drop embellishments faster than lightning. Caused by the property of material, pins may be bent but that won't impair their use.