TK316 is short for TUSK Stainless-steel, which indicated that the jewelry will continue being stainless and you will have no difficulties cleaning it. The which means of “JP 88” can vary depending on the jeweler, state of origin, and precise marking process utilised. TK316 is brief for TUSK Chrome steel, https://andrealxir.tinyblogging.com/everything-about-jp88-80694691