Comparison Console
Zero Tolerance 0551 vs Zero Tolerance 0566
EDC Knives comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Zero Tolerance 0566 stands out as the lightest option for weight, with about a 7% gap from the closest alternative. Zero Tolerance 0566 stands out as the cheapest option for retail price, with about a 27% gap from the closest alternative.
Decision Signals
What stands out
Zero Tolerance 0566 stands out as the cheapest option for retail price, with about a 27% gap from the closest alternative.
Zero Tolerance 0551 stands out as the most expensive option for retail price, with about a 38% gap from the closest alternative.
Zero Tolerance 0566 stands out as the lightest option for weight, with about a 7% gap from the closest alternative.
Zero Tolerance 0551 stands out as the heaviest option for weight, with about a 8% gap from the closest alternative.
Zero Tolerance 0566 stands out as the shortest option for closed length, with about a 3% gap from the closest alternative.
Zero Tolerance 0551 stands out as the longest option for closed length, with about a 4% gap from the closest alternative.
Zero Tolerance 0566 stands out as the shortest option for blade length, with about a 7% gap from the closest alternative.
Zero Tolerance 0551 stands out as the longest option for blade length, with about a 7% 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$275Most expensive
US$200Cheapest
Weight
162 g (5.71 oz)Heaviest
150.3 g (5.30 oz)Lightest
Dimensions
Blade length
89 mm (3.50 in)Longest
83 mm (3.27 in)Shortest
Overall length
206 mm (8.11 in)Longest
196 mm (7.72 in)Shortest
Closed length
117 mm (4.61 in)Longest
113 mm (4.45 in)Shortest
Blade thickness
Unknown
3.96 mm (0.16 in)
Materials & mechanism
Blade steel
Elmax
CPM S35VN
Handle material
Titanium & G-10
Textured G10 front, stainless steel back
Finish
Stonewashed
Stonewashed
Lock type
Frame lock
Frame lock
Opening method
Thumb Stud
SpeedSafe assisted opening system (flipper, thumb stud)
Clip type
Pocket clip (tip-up, reversible for left/right, tip-up or tip-down carry)
Deep-carry quad-mount clip (tip-up/tip-down, left/right)
Use case profile
Best for
Everyday Carry (EDC)Hard Use KnifeTactical Situations
Everyday Carry (EDC)Heavy Duty UseAmbidextrous Carry
Not best for
Unknown
Unknown
Common praise
High Quality Fit And FinishVery Strong And Durable Steel (elmax) BladeRobust Titanium Frame LockErgonomic Handle With Textured G 10 ScaleAmbidextrous Thumb Studs For Easy OpeningReversible Pocket Clip For Varied Carry OptionsBlade Is Sharp And Holds Edge WellKnife Is Sturdy And Solid, Suitable For Heavy Use
Robust And Sturdy ConstructionExcellent Edge Retention And Toughness Of CPM S35VN SteelGood Grip With Textured G10 And Ergonomic HandleSmooth And Rapid Assisted OpeningQuad Mount Deep Carry Clip Allows Versatile Carry OptionsWell Balanced Size For EDC
Common complaints
Relatively Heavy At 162 Grams, Which Might Not Suit All UsersPrice Is On The Higher End For Folding Knives
Heavier Compared To Titanium Framed AlternativesSome Users Find Assisted Opening AggressiveInitial Lock Stick That Can Go Away With Use
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