420 Stainless Steel Handle. The stainless steel features high standard in toughness, abrasive resistance and corrosion resistance. “Beta Plus” Safety Lock Deploying the blade and pushing the “Beta Plus” lock up can transform your pocket-size folding knife into an fixed-blade knife to handle more harsh conditions. Thrust Ball Bearing/ Ball Bearing Washer: The built-in lubricated balls are made of specialized high-carbon chromium bearing steel and are finely machined. The balls feature excellent hardness, wear resistance and fatigue durability.