Self Piercing Eyelets Based on standard eyelet sizes this range offers the benefit of one action cutting and setting when used with the appropriate tool. This greatly speeds up the setting process. Made from brass, most sizes are available in clean, nickel and oxy black finishes. Other finishes are available to special order. Size SPW is also available made from 304 or 316 stainless steel depending on length. See our machinery section for full details of setting equipment.and training on specialist machinery.