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Compare two products
Pick any two products from our reviews and see specifications, price, buyer ratings and our scores in one table.
Recorded evidence
What separates these listings
- Price snapshot
- $2.80 price gap
- Product A has the lower captured price. This excludes delivery and ongoing costs.
- Editorial assessment
- 0.2-point score gap
- Product A has the higher research score, not a measured performance advantage.
- Specification coverage
- 13 of 17 fields shared
- Shared labels have recorded values on both sides; matching labels do not guarantee matching units or test conditions.
Product A
GRIFEMA Keyed Bike Chain Lock, Heavy Duty Anti-Theft Security Lock, 4FT
- Potential fit
- Budget utility locking and secondary deterrence
- Trade-off to resolve
- Lacks independent testing standards like Sold Secure
Product B
Master Lock 5' Resettable Combination Bike Lock, Metal Cable Lock, 8370D
- Potential fit
- Short campus stops with entry-level commuter bikes
- Trade-off to resolve
- Not sufficient for overnight or high-theft urban parking
Side-by-side evidence
17 of 17 recorded specification fields shown
| Side by side |  |  |
|---|---|---|
| Buyer rating | 4.6 | 4.6 |
| Price | $13.99 | $16.79 |
| Our score | 7.4/10 | 7.2/10 |
| Ratings count | 12,407 ratings | 7,320 ratings |
| Brand | GRIFEMA | Master Lock |
| Best for | Budget utility locking and secondary deterrence | Short campus stops with entry-level commuter bikes |
| Physical security | 6.0/10 | 3.8/10 |
| Build quality | 6.8/10 | — |
| Ease of use | 8.2/10 | 8.6/10 |
| Weatherproofing | 7.0/10 | — |
| Value | 8.8/10 | 7.4/10 |
| Portability | — | 8.2/10 |
| Finish protection | — | 8.0/10 |
| Included Components | 1 x Anti-Theft Bicycle Lock, 1 x User Manual, 2 x Keys | Resettable Bike Lock Cable |
| Recommended Uses For Product | motorcycles, scooters, ebikes, skateboards, grills, ladders, doors, lawnmowers | outdoor |
| Number of Pieces | 3 | 1 |
| Model Number | GA1201-12 | 8370D |
| Model Name | GA1201-12 | 8370D |
| Item Type Name | bike chain lock with key | Bike Lock Cable |
| Additional Features | Anti-Corrosion, Cut Resistant, Portable, Scratch-Resistant, Weather Resistant | Durable. |
| Lock Type | 1.Key Lock-4FT | Combination Lock |
| Controller Type | Hand Control | Not recorded |
| Control Method | Touch | Not recorded |
| Style Name | Key lock | Not recorded |
| Brand Name | GRIFEMA | Master Lock |
| Number of Items | 1 | 1 |
| Manufacturer | Ibergrif Griferias,S.L | Master Lock |
| Unit Count | 1 Count | 1 Count |
| Manufacturer Part Number | GA1201-12 | 5569944 |
| Number of Packs | Not recorded | 1 |
| Our verdict | A keyed mechanism provides slightly better physical reliability than cheap combination dials in bad weather. However, the steel gauge and lock body remain entry-level, offering limited defense against sustained attacks with hand tools. Treat this as supplemental locking rather than standalone protection for an expensive e-bike. | This five-foot cable features a user-resettable combination dial and moderate reach for casual campus or utility lockups. While more convenient than fixed-code cables, its security ceiling remains strictly low-to-medium. Prospective buyers with high-value bikes or e-bikes should budget for a rated U-lock instead. |
| Pros and cons |
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Prices and buyer ratings are captured snapshots. A dash means the detail was not recorded, not that a feature is absent. Editorial scores are research assessments, not laboratory measurements.
Sources and limits
This page summarizes our research reviews of Amazon listings, listed specifications and captured buyer ratings. It is not a hands-on test. Scores are editorial assessments, not measured performance; prices are recorded snapshots and may change. A category can include both main products and accessories, so its overall price range is not the cost of a complete setup.
Most recent product record update: September 22, 2026. Individual records may be older; this is not a verification date for every claim. Prices on this page were read from the listings Nov 8, 2026 – Nov 10, 2026.
- Amazon listing: GRIFEMA Keyed Bike Chain Lock, Heavy Duty Anti-Theft
- Amazon listing: Master Lock 5' Resettable Combination Bike Lock, Metal
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