Box UK1 Knife
- Knife
- SK5 Steel
- 6.7 inches
- Thermoplastic Rubber (TPR)
- Better rated than 85%
- More reviewed than 85%
An SK5 steel utility knife with a rubber grip handle, sized for everyday cutting tasks.
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How it ranks among the 246 knifes we track
4.8★ across 6,193 Amazon ratings, Bayesian-smoothed toward the category average.
6,193 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
400+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 246 knifes we track - how the scorecard works · full knifes data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Box UK1 is a knife built with an SK5 steel blade and a thermoplastic rubber handle, with an overall length of 6.75 inches.
SK5 is a carbon tool steel commonly used in utility and folding knife blades for its balance of edge retention and ease of sharpening, while the thermoplastic rubber handle adds grip without the weight of solid metal. The Box brand name and UK1 model point toward a utility style knife rather than a kitchen blade.
- SK5 steel blade
- Thermoplastic rubber handle
- 6.75 inches overall length
- Box UK1 model
Who it's for
Suits users who want a grippy, utility oriented knife for cutting boxes, cordage or general tasks around the house or shop. Not intended as a kitchen chef's knife or a heavy chopping blade, given its size and steel type.
Strengths and trade-offs
Drawn from this product's published specifications.
- SK5 steel is easy to sharpen and holds a working edge
- TPR handle improves grip over bare metal
- 6.75 inch overall length suits everyday carry or utility use
- Not built for kitchen or chef's knife tasks
- SK5 prioritizes ease of sharpening over the edge retention of premium steels
Performance notes
SK5 steel takes an edge well and is straightforward to resharpen, a common choice for utility blades that see repeated use on cardboard, rope and similar materials. The TPR handle adds grip in wet or oily conditions compared with a bare metal handle.
Specifications
| Brand | Box |
|---|---|
| Model | UK1 |
| Material | SK5 Steel |
| Length | 6.7 inches |
| Handle | Thermoplastic Rubber (TPR) |
How it compares
This product against the closest alternatives we track in knifes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Box UK1 KnifeThis product | 4.8 / 5 | 6,193 | 4.5 / 5 |
| WORKPRO W013053AU KnifeWORKPRO | 4.8 / 5 | 9,700 | 4.7 / 5 |
| Victorinox 0.6223.G KnifeVictorinox | 4.8 / 5 | 9,400 | 4.7 / 5 |
| LEATHERMAN 831426 KnifeLEATHERMAN | 4.8 / 5 | 9,800 | 4.6 / 5 |
| Gerber 31-000345 KnifeGerber | 4.7 / 5 | 16,300 | 4.6 / 5 |
Similar knifes from other brands
Questions about the Box UK1
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What steel is the Box UK1 knife made from?
SK5 steel.
What is the Box UK1 handle made of?
Thermoplastic rubber (TPR).
How long is the Box UK1 overall?
6.75 inches.