About ZWILLING
ZWILLING traces to 1731, when Peter Henckels registered a twin-figure trademark (the German word "zwilling" means "twin") with the Cutlers' Guild in Solingen, Germany. The company operates today as Zwilling J.A. Henckels AG, still headquartered in Solingen and owned by the Werhahn Group since 1970. Within that portfolio, ZWILLING is the company's flagship premium cutlery line, sold alongside sister brands including HENCKELS, Staub, Ballarini, and Miyabi. Its product range spans knife sets, individual chef's and Japanese-style knives, cookware, small kitchen appliances, flatware, and glassware.
ZWILLING's forged knives are built around two proprietary processes: SIGMAFORGE one-piece forging from a single steel blank, and FRIODUR, an ice-hardening process the company introduced in 1939 that freezes the steel to roughly -94F for added hardness, edge retention, and corrosion resistance. The Four Star series, one of ZWILLING's core collections, dates to 1976 and paired that forged construction with ergonomic handle design. The Four Star 7-Piece SharpBlock Knife Set we tested pairs SIGMAFORGE forging and FRIODUR hardening with a self-sharpening ceramic block, and carries nearly 1,300 verified Amazon reviews at a 4.7-star average.
Brand website: zwilling.com
What ZWILLING makes
ZWILLING's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Knife block sets
self-sharpening and traditional forged block sets, including the Four Star SharpBlock line featured on DIYRated — featured on DIYRated
Chef's & Japanese-style knives
individual forged and Japanese-style blades sold outside of block sets
Cookware
enameled cast iron and stainless steel cookware
Small kitchen appliances
the ENFINIGY line of countertop appliances
Flatware & glassware
stainless steel flatware and glassware sets
Food storage
the FRESH & SAVE vacuum sealing system
Why we recognized ZWILLING
The DIYRated Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our hands-on category reviews. ZWILLING earned it on the strength of the products below, evaluated the same way every product on this site is: bought, put to work on real jobs, and judged on merit.
ZWILLING products we rated highly
ZWILLING Four Star 7-Piece SharpBlock Knife Set
A top pick in our kitchen knife set testing: the self-sharpening KIS ceramic block hones every blade automatically each time it's drawn out, so the set stays sharp with no separate sharpening tool needed. SIGMAFORGE one-piece forging from a single steel blank gives the blades a rigid, structurally consistent bolster, and ZWILLING's FRIODUR ice-hardening process adds hardness and corrosion resistance beyond conventionally tempered German stainless. Verified Amazon reviewers back it with a 4.7-star average across nearly 1,300 reviews.
Read the 8 Best Kitchen Knife Sets of 2026 guide →What earned ZWILLING the recognition
- Traces to 1731, when Peter Henckels registered the twin-figure trademark with the Solingen Cutlers' Guild, one of the oldest trademarks still in active use and the source of the brand's own name.
- Operates today under Zwilling J.A. Henckels AG (Werhahn Group, since 1970) as the group's flagship premium cutlery line, alongside sister brands including HENCKELS, Staub, Ballarini, and Miyabi.
- SIGMAFORGE one-piece forging and the FRIODUR ice-hardening process, introduced in 1939 and still used on ZWILLING's forged lines, are proprietary to the company and contribute to blade hardness and corrosion resistance.
- The Four Star series, introduced in 1976, combined forged high-performance steel with ergonomic handle design and remains one of ZWILLING's core collections.
- The Four Star 7-Piece SharpBlock Knife Set we tested carries a lifetime warranty and nearly 1,300 verified Amazon reviews at a 4.7-star average.