Bit & Bolts

Origins
Bits & Bolts is based off of mechanical parts used to hold together a machine.

With
This zombie is a strong, solid zombie with good health and  Armored 1. It is a good meatshield, and can be used in a Machine control deck very effectively. Its "when destroyed" ability is also useful, especially with Unlife of the Party. However, only Z-mech can do this normally. Additionally, the Rivet made can block a plant with  Double Strike for a turn, allowing you to hold it off and not take damage, or shield a glass cannon.

Against
This zombie is strong and solid, like a Wall-Nut. If you are a  Solar hero, you can use Whack-A-Zombie or Squash to destroy it. Note, however, that it will make a Rivet that can shield a zombie. You could also use a Freeze+Winter Squash combo as a  Smarty hero, or, as a hybrid hero, use   Deadly zombies. Take care, though: When playing against The Smash, the spawned Rivet or this card itself can be boosted many times over.

Trivia

 * It is one of the cards that The Enginator (PvZH) can use.
 * It was made by GravityWave.