Spyderco Sage™ 5 CPM® REX® 121®

Spyderco Sage™ 5 CPM® REX® 121® C123GBORP
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Crucible Industries' CPM REX 121 represents a high-vanadium, cobalt-bearing tool steel specifically engineered to provide high-speed steel's highest wear resistance, achievable hardness, and red hardness.

It aims to close the performance gap between high-alloy tool steels and carbide materials in rigorous industrial applications. When used in knife blades, it delivers exceptional hardness and unmatched edge retention.

The distinctive qualities of REX 121 are showcased in the full-flat-ground, satin-finished blade of this unique expression of the famous Spyderco Sage 5. Additionally, the knife features distinctive burnt-orange-coloured peel-ply-textured G-10 scales to signify its exceptional status.

All other aspects of this knife align with the established Sage 5 platform, such as nested, skeletonized stainless steel liners, a robust Compression Lock mechanism, and a reversible wire clip that enables ambidextrous tip-up carry.


Overall Length - 7.13" (181mm)

Blade Length - 3.00" (76mm)

Steel - CPM® REX® 121®

Closed Length - 4.17" (106mm)

Edge Length - 2.64" (67mm)

Weight - 3.0oz (84g)

Blade Thickness - 0.118" (3.0mm)

Handle - G-10

Position - Ambi

Tip Carry Position - Tip-Up

Lock Type - Compression

Grind - Full-Flat

Sheath - N/A

Origin - Taiwan

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