This is a salvaged diesel engine piston door knocker. Original connecting rod and piston head pivoting on original wrist pins. Smooth motion, solid impact. These are beyond cool! 
 
This is a viral Colonial creation with over 10 million views on TikTok! Go check us out @colonialmetalworks
 
Since a Ford Diesel 7.3 PowerStroke piston spends most of its life knocking, the transition is a simple one. A little cut here, little weld there, and bam! Now you can beat down the wall and wake up the dead with this heavy steel door knocker
 
The entire assembly is coated in a clear enamel to help seal in the natural colors as well as help protect it from rusting and corroding.
 
The wrist pin motion can be modified to prevent the connecting arm from moving. This would allow the knocker to become a door pull. If you'd like this option please indicate in the message when purchasing. 
 
DIMENSIONS (approximate):
Mounting Plate: 5" Wide x 13" Tall x 14" thick (Aluminum)
Piston: 11" tall x 5" deep
 
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