Skull Piston Bob
Key of Death

Your key becomes the central shaft of the piston structure, creating a compact EDC keychain element with the distinctive Skull Piston crown and housing. Each unit is individually machined and assembled in the workshop.

This is a made-to-order modification.

Option 1 – Skull Piston Parts Kit Components supplied so you can install the assembly yourself.

Option 2 – Skull Piston Installed on Your Key Your key is modified and assembled in the workshop with the Skull Piston structure.

Crown: Brass Piston housing: Aluminum 6061 Internal hardware: Stainless Steel Key shaft: Provided by customer (brass base required)

Piston diameter: approx. 16 mm — 5/8" Assembly height (without rings): approx. 40 mm — 1 9/16"

The key you provide must be brass or bronze (yellow metal). Some brass keys may appear silver due to nickel plating, but the internal material must be brass. Keys do not need to be pre-cut; machining of the key profile can be done later if required. The piston currently available corresponds to the version shown in the first images of the listing.

Accessories shown in photos (carabiners, chains, flashlights, knives, etc.) are decorative and are not included.

See how the EDC community uses this piece on Instagram @carajillobob