HOPIAN Periodic D2 Folding Knife – Purple G10 / Black Stonewash

The Periodic is a designer collaboration folding knife created with Torpen Knives, built for controlled handling, distinctive styling, and dependable everyday performance. This version pairs purple G10 handle scales with a black stonewashed D2 sheepsfoot blade, giving the knife a strong visual contrast while keeping the overall profile practical and refined.

The 3.27-inch sheepsfoot blade uses a flat grind for controlled cutting and efficient slicing across regular EDC tasks. Made from D2 steel and heat-treated to HRC 58–60, the blade offers solid edge retention and wear resistance. The black stonewashed finish gives the blade a subdued working look and pairs cleanly with the purple G10 handle.

With an overall length of 7.75 inches and a carry weight of 133.7 grams, the Periodic has a solid, confident feel in hand. The textured G10 handle supports secure grip and hand placement, while the ceramic ball-bearing pivot delivers smooth opening action. A liner lock keeps operation simple and familiar, and the stainless-steel pocket clip completes the design for daily carry.

Key Features

• Designed in collaboration with Torpen Knives

• 3.27-inch D2 sheepsfoot blade

• Black stonewashed blade finish

• Flat grind for controlled, efficient cutting

• Purple G10 handle scales

• Ceramic ball-bearing pivot

• Liner-lock construction

• Stainless-steel pocket clip

Specifications