Boy's Own Chain

 is a amulet.

Obtaining

 * Crafted by a Jeweller (Lv. 100) from
 * 26 Steam Crackler Heart
 * 23 Atomystique Stone
 * 19 Mofette Stone
 * 12 Obsidemon Slag
 * 4 Mofette Tuff
 * 4 Steam Crackler Egg
 * 3 Solfatra Ulna
 * 1 Obsidemon Vertebra