Specs: 

• Switch type: Linear, Clacky
• Top housing: PC
  
• Bottom Housing: P7
• Stem: M1 (Modified POM)
• Spring: 22m Single-stage spring
• Bottom-out force: 56g
• Pre-travel: 2.0mm
• Total-travel: 3.5mm
• Manufacturer: HMX

Typing Sound Test:

The P7 bottom housing use a modified nylon with 45-50% fiberglass added. It is a new nylon blend from HMX and by far the material with the most fiberglass added. That make Cthulhu switches sound more clacky.

Utilizes and all-new POM hybrid material named M1 to maintain smoothness. It is a little bit harder than regular POM stem