This listing is for a Gast Pneumatic Muffler Silencer 
Model: AJ121G

Specifications:
Brand: Gast  
Type: Pneumatic Muffler Silencer
Condition: New (Other). Item was professionally installed and removed as part of a canceled project that was never put into production.
Port Size: 2-1/2" NPT 
Weight: 7.39 lb 

This item is exactly as pictured.