https://www.bobvila.com/reviews/razor-back-rake-review/
This rake has lasted several seasons and it'll likely last a lot more. It's a simple rake but it's exceptionally well-designed. Here's why.
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https://www.acehardware.com/departments/tools/saw-blades/circular-power-saw-blades/2016603
A circular power saw is a power-saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor....
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https://www.slb.com/products-and-services/innovating-in-oil-and-gas/completions/fluids-and-tools/wellbore-cleaning-tools/casing-and-riser-cleaning-tools/heavy-duty-razor-back-advanced-casing-cleaning-tool
The HEAVY-DUTY RAZOR BACK advanced casing cleaning tool is engineered for high rpm and weight on bit for complex work such as drilling cement accessories.
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