Rockstead Fixed Knives RITSU-ZDP (GD) ZDP189 Clad by VG-10 Blade Wood Micarta Handle

Experience the pinnacle of Japanese blade-making artistry with the Rockstead Ritsu-ZDP (GD). Engineered for elite knife collectors and serious EDC enthusiasts, this luxury compact fixed blade combines an ultra-hard ZDP189 powder steel core (~67 HRC) clad in resilient VG-10 with Rockstead’s legendary, signature hand-polished Honzukuri convex edge. This proprietary mirror-finished geometry delivers frictionless, world-record cutting performance and unparalleled edge retention. Complete with an ergonomic wood micarta handle, precision-machined titanium fittings, and an innovative leather/Kydex hybrid sheath, the full-tang Ritsu-ZDP represents an investment-grade masterpiece that perfectly balances heavy-duty tactical reliability with breathtaking aesthetic elegance.

Key Features & Why It’s Extraordinary

• Mirror-Polished ZDP189 Steel Blade: Engineered with Rockstead’s legendary ZDP189 powder stainless steel, boasting an incredible hardness of around 67 HRc. This delivers unmatched edge retention and a terrifyingly sharp cut that lasts longer than standard folding knives.

• Traditional Japanese "KOI" Motif: The handle elements are beautifully engraved with a Japanese carp (Koi)—a cultural symbol of strength, perseverance, and good fortune.

• DLC-Coated Titanium Handle: The solid titanium handle is treated with a Diamond-Like Carbon (DLC) coating, providing exceptional scratch resistance, durability, and a sleek, tactical matte finish.

• Flawless Button Lock Mechanism: Equipped with a buttery-smooth button lock system that ensures secure blade deployment and effortless, safe one-handed closing.

• Discreet Pocket Clip: Includes a sleek, low-profile pocket clip for secure and comfortable everyday carry.

Masterpiece of Japanese Artistry

Rockstead knives are globally renowned for their precision engineering, and the SHU (KOI) is a true testament to that legacy. Every aspect—from the flawless geometry of the blade to the intricate engraving on the titanium scales—is meticulously finished in Japan. It is not just an EDC tool; it is an heirloom-quality investment.

ZDP189 Blade Introduction

ZDP-189 is a high-carbon, high-chromium powder metallurgy steel renowned for its extreme hardness, often exceeding 64 HRC, which delivers peerless edge retention and aggressive cutting performance. This performance comes at a cost; its massive carbide volume makes the steel notoriously difficult to sharpen and increases brittleness, posing a risk of chipping under heavy lateral impact. Furthermore, while technically stainless, its high carbon content necessitates diligent maintenance to prevent oxidation, making it a specialized choice for precision cutting tasks rather than rough, heavy-duty utility.

This is very comvenient and versatile compact fixed blade knife. This blade material is ZDP189 and blade shape is a dual convex Honzukuri with mirror finished. And, full-tang blade knife. Handles material is wood micarta. A guard and the back plate material is titanium.

This leather sheath is putting a kydex on inside. And, it is very stylish workmanship. 
Please enjoy the beauty of our completed blade.

This blade material will be changed ZDP189 clad steel in 2022.

RITSU-ZDP(GD)