Materials:

• Top Housing: PC / Nylon Mix
• Bottom Housing: Nylon
• Stem: POM

Spring:

• Length: 20mm
• Actuation: ~50g (Yellow) | ~45g (Red) | ~45g (Silver)
• Bottom-out: ~60g (Yellow) | ~50g (Red) | ~50g (Silver)

Misc:

• Manufacturer: Gateron
• Factory Lube: Yes
• Pins: 3
• Pre-travel: 2mm | 1.2mm (Silver)
• Total travel: 4mm | 3.4mm (Silver)

Silver switches are speed switches, meaning they actuate and bottom out earlier. 

• Silver actuates at 1.2mm and bottoms out at 3.4mm.
• Yellow and red actuate at 2mm and bottom out at 4mm.

Yellow switches feature a slightly heavier spring than both red and silver switches.

• Yellow bottoms out at ~60g.
• Red and silver bottom out at ~50g.