Victorinox Fibrox 10 Inch Granton Edge Butcher Knife: Review, Pros & Cons

Summary

The Victorinox Fibrox 10-inch Granton Edge butcher knife is a Swiss-made stamped stainless blade whose fluted edge reduces sticking on wet, fatty meat. Check the item number before buying: 5.7423.25B is the 10-inch Granton version, not the straight-edge or 12-inch siblings.

Strengths

The fluted Granton edge creates air pockets that reduce drag and sticking on wet, fatty meat.
Slip-resistant Fibrox handle stays grippy in a wet commercial kitchen.
Dishwasher-safe and NSF certified, so it suits a working kitchen.
Lifetime warranty against material and manufacturer defects.
Light at 213 g, so it stays nimble through long trimming sessions.
Owners report a sharp factory edge and good edge retention.

Weaknesses

Stamped, not forged; it is not a heavy bone-chopping cleaver.
No published hardness (HRC) or steel composition, and no instrumented test of this exact model exists.
The hollow-ground Granton edge is thinner than a plain straight edge; sharpening must follow the scallops.
Light weight is a limit for buyers wanting brute force; one 12-inch buyer in the line switched to carbon steel.
Availability and price vary by channel; the blister-pack SKU was out of stock at one retailer.
Retailer copy sometimes calls the edge “straight Granton”, which can mislead buyers comparing with true straight-edge blades.

Verified specifications

Manufacturer item number	5.7423.25B (also sold as 5.7423.25, 5.7423.25-X3, 40638 and 47638).
Origin	Switzerland; hand finished by Victorinox in Switzerland.
Construction	stamped, not forged.
Blade	25 cm (10 in), high-carbon stainless steel, straight blade shape, pointed tip.
Edge	fluted / Granton, hollow-ground scallops.
Handle	black Fibrox thermoplastic elastomer (TPE), slip-resistant when wet.
Dishwasher safe	yes.
NSF certified	yes.
Dimensions and weight	393 × 45 × 22 mm, 213 g (7.5 oz).
Shipping weight (packaged)	0.61 lb (277 g).
Warranty	Victorinox Lifetime Warranty against material and manufacturer defects in normal use.
Intended use	trimming and portioning through thick cuts, cartilage and bones.
No published hardness (HRC) figure or steel composition; no manual or per-model spec PDF was found.

Full research notes and sources

Which model this is

This page covers the 10-inch Granton (fluted) butcher knife, item 5.7423.25B, Swiss-made, with a black Fibrox handle. The same blade is sold under 5.7423.25, 5.7423.25-X3 and the legacy numbers 40638 and 47638, and the retired Forschner name still appears in trade channels. Do not confuse it with the straight-edge 10-inch (5.7403.25), the 12-inch (5.7403.31) or the 8-inch (5.7403.20) siblings. The Amazon listing carries ASIN B078KDXXMV.

Granton edge and what it does

The blade is hollow ground with alternating scallops that create small air spaces between steel and food, so a wet or fatty cut releases from the blade instead of sticking. Retailer and distributor copy describes the same mechanism as creating air pockets to reduce drag and sticking. Against a plain straight-ground butcher blade the practical difference is less drag and cleaner release; against a forged cleaver the difference is that this is a light, 7.5-ounce stamped tool and not a bone-chopping weight. No source checked documents a durability problem from the thinner hollow-ground bevel, but it is the structural difference a buyer comparing with a straight-edge knife should know.

Owner feedback

Those 10-inch buyers describe a knife that is sharp out of the box, holds an edge without needing a steel, does not let fat stick to the blade thanks to the Granton scallops, and grips securely in a wet commercial kitchen. One buyer used it to break down ten whole pigs. The automated summary on that listing says customers find it sharp, sturdy and able to handle large cuts of meat with ease, that it keeps its edge well, that it works for both home and professional use, and that some mention the price is fair; that summary is machine-generated from the reviews, not an independent test. No defect, chipping, rust, handle-loosening or edge-roll complaint is recorded for the 10-inch variant, and no credible defect-rate estimate exists for this model.

US trade prices observed 2026-10-20: $92.97 (OsoGrandeKnives), $93.99 (KnivesPlus), $107.00 (WebstaurantStore and SMKW, the latter out of stock in blister pack), with one distributor listing $351.90 (CKitchen), which is an outlier versus the rest of the trade. In the same distributor catalogue the 10-inch straight-edge version is $77.00, the 12-inch straight-edge is $83.00 and the 8-inch is $56.00, which puts the Granton 10-inch at roughly a $30 premium over the plain 10-inch. At $90-$100 this knife is straightforwardly good value as the standard Swiss-made, NSF-certified, Granton-edged butcher knife sold across US restaurant supply, with a lifetime warranty, a 10-inch stamped stainless blade and a slip-resistant handle. At $100-$110 it remains reasonable and matches the trade norm. Above roughly $110 there is little justification from the specification set: the next step up in the same brand’s line is a forged or heavier cleaver, not a better stamped Granton butcher blade. Paying materially above $150 means buying on brand rather than on specification. The $351.90 listing is not defensible as a street price for this item.

Maintenance, sharpening and warranty

The knife is fully dishwasher safe per the manufacturer and both retailer spec sheets. Victorinox’s published care guidance is general rather than model-specific: hone the knife regularly, ideally before or after each cooking session and every few uses with a honing steel, and sharpen about once or twice a year or after extensive use; Victorinox stores also offer a professional sharpening service. Because the edge is hollow-ground and fluted, sharpening has to follow the scallops. KnivesPlus sells an in-house sharpening option for $5.00. There are no consumables, no service parts and no power; the manufacturer’s cutlery service pages cover sharpening and general care, not spare parts. Warranty is lifetime coverage on the knife itself from both the product page and the warranty terms.