LionSteel Twain Knives | Double Integral Button Lock EDC Folder

LionSteel Twain

The LionSteel Twain is the most technically ambitious folder the company has produced, and the Manufacturing Quality Award it earned at Blade Show Atlanta 2024 reflects how seriously the knife community took it. LionSteel calls it their first "Solid 2" knife — meaning both the titanium frame and the wraparound inlay scale are each machined from a single solid block of material, making the Twain the only Double Integral production folder currently on the market. Getting two separately milled integral pieces to fit together with the precision required for a functioning button lock is the kind of manufacturing challenge that very few production knife companies are equipped to attempt.

The button lock itself is a first for a LionSteel-branded knife. Previous SOLID designs relied on frame or liner locks, which integrate more naturally into monoblock construction. A button lock on an integral frame demands a different approach to tolerances and geometry entirely, and the execution here is clean. The blade deploys via an ambidextrous thumb hole — a low-profile opening method that suits the Twain's refined carry profile — and the V-flat ground drop point at 80mm is sized for daily use without excess.

At 3.03 oz and 7.28 inches overall, the Twain sits in a comfortable carry range. The titanium frame is available in grey, bronze, and blue anodized finishes. The wraparound inlay scale in each variant is milled to match seamlessly with the frame geometry — a fit-and-finish detail that's visible in the hand immediately.

Blade Steel and Handle Options

MagnaCut variants run CPM MagnaCut in a satin V-flat grind, paired with titanium frames in grey, bronze, and blue with inlay scales in carbon fiber, canvas micarta, natural micarta, green micarta, and black G-10. For buyers who want a collector-grade option, the Twain is also available with a Chad Nichols Scrambled Damascus blade on bronze and blue titanium frames with carbon fiber inlays.