Comparison Console
WE Knife Double Helix vs Zero Tolerance 0640
EDC Knives comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Zero Tolerance 0640 stands out as the lightest option for weight, with about a 4% gap from the closest alternative. Zero Tolerance 0640 stands out as the cheapest option for retail price, with about a 11% gap from the closest alternative.
Decision Signals
What stands out
Zero Tolerance 0640 stands out as the cheapest option for retail price, with about a 11% gap from the closest alternative.
WE Knife Double Helix stands out as the most expensive option for retail price, with about a 12% gap from the closest alternative.
Zero Tolerance 0640 stands out as the lightest option for weight, with about a 4% gap from the closest alternative.
WE Knife Double Helix stands out as the heaviest option for weight, with about a 4% gap from the closest alternative.
WE Knife Double Helix stands out as the shortest option for closed length, with about a 3% gap from the closest alternative.
Zero Tolerance 0640 stands out as the longest option for closed length, with about a 3% gap from the closest alternative.
WE Knife Double Helix stands out as the shortest option for blade length, with about a 12% gap from the closest alternative.
Zero Tolerance 0640 stands out as the longest option for blade length, with about a 14% gap from the closest alternative.
Specification Profile
Relative dimensions at a glance
Each axis is normalized against the largest raw value among the products in this comparison. Farther outward means a larger value, not necessarily a better result. Axes with an unverified value are omitted.
Price & carry
Retail price
US$300Most expensive
US$268Cheapest
Weight
129.57 g (4.57 oz)Heaviest
125 g (4.41 oz)Lightest
Dimensions
Blade length
83.82 mm (3.30 in)Shortest
95.25 mm (3.75 in)Longest
Overall length
200.66 mm (7.90 in)Shortest
215.9 mm (8.50 in)Longest
Closed length
116.84 mm (4.60 in)Shortest
120.65 mm (4.75 in)Longest
Blade thickness
4.06 mm (0.16 in)Thickest
3.96 mm (0.16 in)Thinnest
Materials & mechanism
Blade steel
CPM S35VN
CPM 20CV stainless steel
Handle material
Titanium
Titanium with green carbon fiber overlay
Finish
Two-tone stonewashed blade, tumbled titanium handle
Stonewashed flats with satin grinds on the blade, stonewashed titanium handle
Lock type
Slide Lock (external titanium spring, patented)
Titanium frame lock with hardened steel lockbar insert
Opening method
Thumb groove and pull on knobs on either side to flip open
Thumb disk, manual opening
Clip type
Blasted titanium bent style pocket clip, tip-up, right carry
Reversible tip-up pocket clip
Use case profile
Best for
Everyday CarryEDCGentleman's knifeCollectors
Everyday CarryWorkTactical
Not best for
Heavy duty tasks requiring very ergonomic grip
Unknown
Common praise
Excellent fit and finishInnovative and reliable Slide Lock mechanismHigh-quality blade steel and grindingSecure pocket clipUnique and interesting design
High wear resistance and edge retention due to CPM 20CV steelGood corrosion resistanceSecure titanium frame lock with hardened steel insertAmbidextrous one-handed opening with thumb diskErgonomic and visually interesting handle with green carbon fiber overlaysMade in the USA
Common complaints
Feels heavier than expected for sizeLock mechanism can be awkward or stiff for some usersSharp edges on handle and clip screws affect comfortDeployment takes practiceMay not be ergonomically comfortable for all hand sizes
Unknown
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