1 Steel wire, the best mobile phone chain is double chain 0.6 or 0.45, generally double chain 0.6 is more stylish 2 Closing ring or double ring I like to use the card 8 closing ring, or double ring is also OK, so as to ensure that the phone chain is more stable, if you use the drill spring ring can use the card 10 closing ring 3 Positioning beads if using 0.6 double chain, must use more than 2.5 closing ring, double chain closing with pressure cooker will not be able to go, do not want to use pressure cooker for beauty, single chain is always afraid of mobile phone chain will be broken, double chain is safer
