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For those looking for something a little more rugged, there's the Prohen XR. Straightforward, ergonomic, and durable, the Prohen XR is clad with thick G10 handles that provide ample grip in all conditions.

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SOG Mikkel Willumsen Prohen XR Lock Flipper Knife 3.35" Gray D2 Drop Point Blade, Red G10 Handl…Retail price: $79.99, our price: $69.99
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SOG Mikkel Willumsen Prohen XR Lock Flipper Knife 3.35" Black D2 Drop Point Blade, Black G10 Ha…Retail price: $79.99, our price: $69.99
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SOG Mikkel Willumsen Prohen XR Lock Flipper Knife 3.35" Black D2 Drop Point Blade, Gray G10 Han…Retail price: $79.99, our price: $69.99
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SOG Prohen XR FAQ

Designed by custom maker Mikkel Willumsen, the SOG Prohen XR series is a rugged folder built for tactical use and heavy work duties. These knives feature the ambidextrous XR lock and high-traction G10 scales for reliable performance in the field.

How do you deploy the SOG Prohen XR blade?
The SOG Prohen XR offers three different control points for deployment: a flipper tab, a blade cutout, and the XR lock bar itself. The pivot uses ball bearings to ensure the blade swings freely and smoothly regardless of which opening method you choose.
Is the SOG Prohen XR suitable for left-handed users?
Yes, the SOG Prohen XR is fully ambidextrous because the XR lock is accessible from either side of the handle. Additionally, the deep-carry pocket clip is reversible to accommodate both left and right-hand carry.
What steel is used for the SOG Prohen XR series?
The SOG Prohen XR series uses D2 tool steel, which is selected for its toughness and ability to maintain an edge during heavy-duty tasks. The blades feature a saber-height flat grind and are available in various finishes depending on the specific model.
Is the SOG Prohen XR a good choice for heavy-duty work?
The SOG Prohen XR is specifically designed with a heavy work-duty vibe, featuring a robust saber-height flat grind and thick G10 scales. The handle geometry and generous finger guard provide a secure grip that facilitates powerful cuts while protecting the user's hand from the edge.
What are the ergonomic benefits of the Prohen XR handle design?
The SOG Prohen XR handle is canted downward to help the user bring the tip of the blade to bear more naturally on a target or workpiece. It also includes a buffer zone between the guard and the edge that allows you to safely choke up for more controlled, finer cutting tasks.
Who designed the SOG Prohen XR?
The Prohen XR was designed by custom knifemaker Mikkel Willumsen. His signature aesthetic is visible in the distinctive blade shape and the ergonomic flow from the blade into the handle.