853401 Kai ZX Key Chain is a Ninjagoset released in March2012 featuring Kai ZX attached to a key chain. The minifigure parts can move, but cannot come apart because a special glue is used (see Key Chains page).
This is a description taken from LEGO.com. Do not modify it.
Add the ninja master of fire to your key ring or backpack!
Pack a ninja everywhere you go with the Spinjitzu master of fire! This authentic Ninja Kai minifigure in red ninja gear is attached to a sturdy metal ring and chain. Makes a great backpack charm!
Features authentic LEGO® Ninjago Ninja Kai minifigure with accessories, attached to a sturdy metal ring and chain
Attach to your keys or backpack!
Minifigures are not detachable from metal chain
Makes a great gift for fans of LEGO Ninjago building sets!