Rockstead Sai-ZDP specs and steel
The Rockstead Sai-ZDP has a 3.15" blade in ZDP-189, weighs 5.1 oz and uses a liner lock.
Specifications
- Blade steel
- ZDP-189
- Blade length
- 3.15"
- Overall length
- 7.48"
- Blade thickness
- 0.15"
- Weight
- 5.1 oz
- Lock
- Liner lock
- Handle
- Titanium (DLC coated)
- Blade shape
- —
- Made in
- Japan
- Model
- Sai-ZDP (AWR)
- Brand
- Rockstead
Antique Wine Red (AWR) handle variant. Maker's page: 'ZDP189 Clad by VG10', around 67 HRc, dual convex HONZUKURI blade, titanium handle; 80 mm/25.4 = 3.15", 190 mm = 7.48", 3.7 mm = 0.15", 145 g/28.35 = 5.1 oz. No price on rockstead.jp; dlttrading.com lists the black (BK) variant at $1,800.00 (retailer price, MSRP field blank) with 'Lock Type: Liner', 4.94 oz (140 g). Lock type taken from the DLT listing of the BK variant.
Where to buy
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The steel: ZDP-189
ZDP-189 is a powder metallurgy stainless steel rated 9/10 for edge retention, 2/10 for toughness and 5/10 for corrosion resistance; it is very low on ease of sharpening (2/10). Full ZDP-189 page.
How ZDP-189 compares
More Rockstead knives
- Rockstead Higo II TI-ZDP ZDP-189
Other knives in ZDP-189
Specs checked on 2026-10-14 against the maker's product page.