Pirahna Excalibur OTF with Chrome Scales & Button & Half Serrated Blade Argueably the Best OTF available….Handle is T6 Alloy with Machine Screw Construction & Anodized Finish. 100% Made in the USA! CNC machined and precision ground parts. Engineered, heat-treated stainless steel springs. Aircraft alloy handles the highest quality heat-treated stainless steel blade and internal parts. Mirror polished & a True Double Edge 1/2 Serrated Blade with Blood Groove right down the center. Also comes with a Titanium Pocket Clip.