Features: Engineered for automotive enthusiasts, this car piston keychain combines metal construction with a precisions narrow mouth design, offering durability and easy key attachment while showcasing authentic engine part aesthetics. Crafted from oxidation resistant metal, the detailed piston model features a compact 2.5" profile with reinforced threading and smooths edges, ensuring handling and long term structural integrity as a premium engine accessory. Perfect gift for car restoration hobbyists, motorsport fans, and mechanical engineering enthusiasts seeking functional key jewelry that celebrates automotive culture through its genuine engine component styling. Securely organizes keys during garage workshops, car meets, or daily commutes while doubling as a conversation starting desk ornament in offices or man cave display piece for vintage auto collectors. The weighted metallic finish mimics actual piston functionality, with its thermal resistant coating maintaining luster through seasonal changes, making it both a practical key management solution and collectible automotive memorabilias. Specifications: Component: Metal Size: As Pictures Show Package Includes: 6x Keychian note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.