MX2 BLACK HEAVY Linear RGB Operating Force 60cN; Pre-Travel 2.0mm Operating Force 60cN Pre-Travel 2.0mm Similar to the MX BLACK RGB Gen1, but offers premium-grade lubricant, noise-reducing spring design, unique, spring-centering stem, diamond polished stem and spring guidance, glide-optimized stem guidance ribs, and industry leading, unrivaled Gold Crosspoint Contact System. German Engineered; Made In Germany. Highly Automated Manufactured Products. In-House Lab and Quality Testing. Best Contact System (MX Gold Crosspoint offers High Production Quality), Maximum Durability and Quality (Only Manufacture Guarantees the Service Life of More Than 100 Million Keystroke for Mechanical Switches), Leading Bounce Time Typ. <1ms