The Extrema Ratio Frame Rock is a new knife, based on the design of the Ti-Rock, a successful framelock custom made knife that Extrema Ratio has realized for a renowned Italian distributor.

The Extrema Ratio Frame Rock is characterized by the titanium grip that offers great toughness and yet is very light. The frame lock integrity and duration are guaranteed against wear by a heat-treated steel insert that can be easily replaced and is integrated by a safety that protects against accidental unlocking of the blade under heavy stresses.

Differently from its drop-point predecessor, the Frame Rock has a spearpoint blade, 3” (75 mm) long, 0.25” (6.3 mm) thick, fullered for further lightness and milled out of Bohler N690 steel, heat treated to 58 HRC. The blade can be had in black or stone washed finish.

To make opening even easier, smoother and effortless, the blade pivots on ball bearings around a hub that incorporates a mechanism that allows the user to adjust the force needed to free the blade from the closed position thanks to a screw. A counter screw secures the adjusting screw in place after it has been set to the desired position.

The reversible clip with lightening holes is designed to allow deep pocket carry, with as little as possible of the knife visible from the outside.

Scallops milled in the grip facilitate one handed opening via the classical ambidextrous stud on the blade, and facilitate grip transitions.

The knife overall length of 7.1” (181 mm) places it in the range of medium sized folders and the solid, large grip and well proportioned, stocky blade allow it to tackle heavy tasks without fear of failure. Yet the Frame Rock weighs just 9.6 oz (270 g) making it quite light for such a robust knife.