Tool
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
- $1.07 price gap
- Product B has the lower captured price. This excludes delivery and ongoing costs.
- Editorial assessment
- 0.5-point score gap
- Product A has the higher research score, not a measured performance advantage.
- Specification coverage
- 12 of 18 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 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D
- Potential fit
- Tethering quick-release wheels to a frame
- Trade-off to resolve
- Cable core remains vulnerable to mechanical cutting tools
Side-by-side evidence
18 of 18 recorded specification fields shown
| Side by side |  |  |
|---|---|---|
| Buyer rating | 4.6 | 4.6 |
| Price | $13.99 | $12.92 |
| Our score | 7.4/10 | 6.9/10 |
| Ratings count | 12,407 ratings | 7,320 ratings |
| Brand | GRIFEMA | Master Lock |
| Best for | Budget utility locking and secondary deterrence | Tethering quick-release wheels to a frame |
| Physical security | 6.0/10 | — |
| Build quality | 6.8/10 | 6.8/10 |
| Ease of use | 8.2/10 | — |
| Weatherproofing | 7.0/10 | — |
| Value | 8.8/10 | — |
| Security level | — | 3.5/10 |
| Reach and flexibility | — | 8.5/10 |
| Mechanism usability | — | 7.5/10 |
| Value proposition | — | 8.2/10 |
| Included Components | 1 x Anti-Theft Bicycle Lock, 1 x User Manual, 2 x Keys | One adjustable cable lock, two keys |
| Recommended Uses For Product | motorcycles, scooters, ebikes, skateboards, grills, ladders, doors, lawnmowers | Bike |
| Number of Pieces | 3 | 1 |
| Model Number | GA1201-12 | 8122D |
| Model Name | GA1201-12 | 8122D |
| Item Type Name | bike chain lock with key | Bike Cable Lock |
| Additional Features | Anti-Corrosion, Cut Resistant, Portable, Scratch-Resistant, Weather Resistant | Anti Theft, Heavy Duty, Resettable |
| Lock Type | 1.Key Lock-4FT | Not recorded |
| 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 | 8122D |
| Number of Packs | Not recorded | 1 |
| Manufacturer Warranty Description | Not recorded | Limited Lifetime Warranty |
| 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. | With a 1/2-inch outer diameter and a six-foot reach, this cable provides greater mechanical bulk and locking flexibility than thinner utility cords. It loops comfortably through both wheels and a post, though it remains susceptible to dedicated bolt cutters. It works best as an auxiliary tether paired with a hardened U-lock. |
| 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 6 ft Cable Bike Lock 4-Digit Combination
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