These brass eye pins measure 25.4mm in length from under the eye and are 0.71mm thick. Silver plated on Brass. A jewelry maker staple. Eyepins are an excellent time saver when it comes to bringing your jewellery pieces together, as they already have a loop at one end, and can be easily manipulated to create bead links fairly quickly. Silver plated on brass, thesse are Nickel Free and lead free.