- Frame Rock Blue Titanium, Satin compact EDC folding knife from Extrema Ratio. Built with a huge amount of power, it will stand up to the toughest challenges. Superior materials such as titanium and N690 steel and compact size for easy carrying!

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Frame Rock Blue Titanium, Satin firmly built compact folding knife from Extrema Ratio with strong construction. Easy to carry in pockets, small flashlight holsters or on a single MOLLE system belt. Proven ER design, contoured titanium handle, proven N690 steel for knife blade, Ball bearings for smooth opening! Perfect for everyday carry, a reliable companion for everyday life.
N690 - cobalt-rich 1.65% (Co) corrosion-resistant, high-carbon 1.07% (C) martensitic chromium steel 17.30% (Cr) with molybdenum 1.10% (Mo), vanadium 0.10% (V). Developed to provide better wear resistance compared to the original Böhler N690 steel, but with higher cobalt (Co) content in its composition. It features exceptionally high corrosion resistance and long edge retention. One of the best tool steels in the world today. Hardened in the range of 58-61 HRC. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.
Blade - wide, Spear Point type, finished with an elegant satin finish. The solid thickness of the blade combined with a high, flat grind (Flat Grind) gives excellent cutting edge geometry and extreme cutting performance. A large, centrally located grain reinforces the strength of the blade. Ball bearings support the smooth opening of the blade, which can be opened with a double-sided pin in the wedge (Double Thumb Stud). To maintain full control of the blade, there is an upper jimping, notched thumb rest on the back of the wedge. The entire blade is locked with the proven and popular frame lock with a steel insert to prevent the lock face from rubbing off.
Handle - grips made of blue anodized titanium. Chamfered edges of the covers eliminate sharp edges and Extrema Ratio's characteristic finger recesses improve grip security. The so-called open-backed design without the typical backspacer, fastened together with steel spacer sleeves for easy cleaning. Simple, sturdy construction provides assurance of many years of use. A two-position (right/left) steel deep-carry clip allows you to carry the knife discreetly in your pocket in tip-up position (blade tip up). Below the pivot screw is a smaller opening force adjustment screw, depending on your preference you can set yourself the amount of force needed to open the knife.
Additional accessories - the knife comes in a set with a Peli type case for easy storage and carrying.
Technical data:
Product number: 04.1000.0456/SAT/BLU
Product name: Frame Rock Blue Titanium, Satin
Overall length: 181.0 mm / 7.1"
Blade length: 75.0 mm / 3.0"
Blade thickness: 6.0 mm / 0.23"
Handle length: n.d.
Handle thickness: n.d.
Weight: 270.0 g / 9.6 oz
Blade material: N690
Blade hardness: 58 HRC
Blade grind: Flat
Blade finish: Satin
Handle material: Titanium
Handle finish color: Blue
Backspacer material: Stainless Steel
Backspacer color: Gray
Clip: Right / Left, Tip-Up
Clip material: Stainless Steel
Pivot mechanism: Ball Bearing (ball bearings).
Locking mechanism: Frame Lock
Opening method: Manual, dual thumb stud
Additional accessories: Peli type case
Designer: Extrema Ratio
Brand: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy
Developed by: the Sharg® company