Zwilling Twin 1731 9" Sharpening Steel
Twin 1731 is designed by the internationally acclaimed designer Matteo Thun. Years of work culminated in the Zwilling wedge geometry that improves comfort and optimizes cutting technique. This innovative curved bolster is meant to be an extension of the hand, supporting the professional grip with thumb and index finger on the blade
Developed for bearings in aerospace engineering, the high performance Cronidur 30 steel boasts impressive toughness and corrosion resistance that is 100 times higher than standard steel. Combined with Zwilling's signature ice-hardening technique, this Friodur blade is exceptionally sharp and durable.
Each knife is precision-forged with Zwilling's Sigmaforge process, resulting in a remarkably sturdy, balanced and flexible blade. With an incredibly sharp, laser-controlled edge, the knives are honed and hand-finished by the most skilled artisans.
Manufactured in Germany
Cronidur 30 high-performance No Stain steel
Sigmaforge knife is forged from a single piece of solid steel
Ice-hardened Friodur blade starts sharper, stays sharper longer, and has superior resilience
Precision-honed blade and laser-controlled edge ensures ideal cutting angle for sharpness and durability
Curved bolster encourages cutting with improved precision, safety and comfort
Full-edge utility: whole length of the blade can be used for cutting and chopping and the edge can be sharpened from bolster to tip
Untreated, oiled Ebony wood handle is bonded to the bolster and tang with seamless accuracy
60 Rockwell Hardness = exceptional edge retention
Edge angle 12.5 degrees per side
Substance: High Carbon Stainless Steel