A comparison of the two supplied box-cutter listings for carton opening, limited to stated blade type, blade-change wording, size, handle material and included spares.
Start with the blade system, because that is where the two listings differ most clearly
Both supplied tools are utility knives with replaceable blades, so the choice is not between a disposable blade and a fixed one. The OTF Box Cutter, Automatic Double Action Utility Knife states a blade material of SK5 and a blade style of utility knife. The Compact Folding Utility Knife with Keyring & Replaceable Blade states a replaceable standard utility blade and describes replacement as quick and tool-free.
That wording matters for carton work because cardboard dulls an edge and a fresh blade is the usual remedy. The folding listing says explicitly that the blade can be changed without tools. The OTF listing states that the knife removes the replacement blade, but it does not describe the change method, so do not assume a tool-free change from the OTF listing. If a quick change without tools is a priority, the folding listing is the one that documents it.
Size and carry: one stated folded size, one stated overall length
The two listings do not give the same kind of measurement, so they cannot be compared directly. The folding knife is stated as approximately 92 mm by 26 mm when folded. The OTF box cutter is stated as 3.72 in overall length, with a 1.12 in blade length; 3.72 in converts to roughly 94.5 mm. An overall length and a folded length describe different things, and the OTF listing does not give a folded figure, so no like-for-like size comparison is possible from the supplied facts.
The folding listing also states a built-in keyring hole for attaching the knife to keys, a lanyard or a bag. The OTF listing states a pocket clip. Those are different carry arrangements rather than a measured difference in how either knife carries.
Handle material and what comes in the box
The OTF listing states a handle of T6-6061 aviation aluminium alloy plus carbon fibre. The folding listing describes a textured aluminium-style handle. Those are material labels only; neither listing states a grip rating, a finish specification or a care routine, so the wording should not be read as a claim about how either handle feels or wears.
Both listings include five spare blades. The OTF listing states that you receive the knife, five SK5 blades and a black box, and it also mentions a gift box. The folding listing states one folding utility knife, five spare blades and one user manual. The folding listing is the only one of the two that documents a user manual, which is relevant because the exact opening, closing and blade-change steps are model-specific.
What the listings leave open
Neither listing states a corrosion-resistance rating, a lock type or rating, a hardness figure, or whether any part of the knife other than the blade is replaceable or serviceable. The OTF listing mentions an excellent safety device to keep the blade from dropping, but it does not name the mechanism or a force threshold. The folding listing describes a secure locking mechanism without naming a lock type.
For carton opening specifically, the documented difference that matters most is the blade-change wording: the folding knife states tool-free replacement, while the OTF listing does not describe how its blade is changed. Everything else in the supplied facts is a material, size or inclusion detail rather than a statement about cutting performance.
Do both knives include spare blades?
Yes. Both listings state five spare blades. The OTF listing specifies SK5 blades; the folding listing states standard utility blades.
Which one states a folded size?
Only the folding knife, at approximately 92 mm by 26 mm when folded. The OTF listing gives an overall length of 3.72 in and a blade length of 1.12 in, which are different measurements.
Does the OTF listing say the blade can be changed without tools?
No. It states that the knife removes the replacement blade but does not describe the change method. The folding listing states quick, tool-free blade replacement.
