Twisted Gold Filled Crimps are a popular tube-style that have a twisted pattern that increases holding power. Crimp by flattening with a needle nosed plier (no specialized crimping pliers required). Picture is enlarged to show twisted pattern detail. Inner diameter is about 1.1mm, nominally labeled a 2x2mm crimp (actual measurements are about 1.8mm). Sold in packages of 50 Crimps.
Also called "cable guards" or "cable thimbles", extends the life of your jewelry by protecting stringing products at the place where they connect to a clasp.