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Description
RZ55E Viscosity Improver 300mlRZ55E Viscosity Improver is developed to restore the viscosity of the engine oil. Known as Oil Booster to protect the engine oil against premature deterioration. Helps to prevent oil from breaking down, counteract oil thinning by boosting viscosity and increasing the anti wear property. Improves compression and the viscosity index of the oil and prevents metal to metal friction. Compatible with all mineral, synthetic oils and suitable for regular and
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 650 reviews
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Product Reviews
★★★★★ 5
The cutting edge of trimmers
Size: 8.7-INCH
Great Product. Lots of power and does not drain the battery right a way. Few different attachments. I bought this for my wife Light, durable and easy to handle
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Not bad for the price, trust the hardware not the brand
Used it one time, but will leave a review for those wondering.
Trimmer: Worked well for out of control vines and leafy hedge. It had enough power and was sharp enough to do the job I wanted which I'd say was small to medium size. I am sure overtime it'll dull, but for the initial tryout I'd give it a 9/10. Feels great in hand, light weight, has the ability to switch from top to side cutting.
Blower: Pretty good power, but chews through battery. Absolutely does the job and is very lightweight and easy to use. 10/10
Overall, for the package price I'd say it's worth it. Who knows how long these cheap devices will last, but for light to moderate yard and lawn care they should do the job. If you live on some farm in Iowa then you'll probably want something better and stronger. But for those with a small backyard in the subs somewhere it's more than capable.
Batteries are not included. I had used and picked up the aftermarket 8MAH max (DeWalt clones) 2-pack for $50.
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Reviewed in the United States on August 12, 2025
★★★★★ 5
Nice handheld trimming tool
Size: 8.7-INCH
This is handy for getting in tight spaces.
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Reviewed in the United States on May 24, 2026
★★★★★ 1
Not good
Size: 8.7-INCH
Unfortunately, the shears component broke the very first time I used it, and I cannot find any replacement parts.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great combo!
Great deal!!! Get this combo now. The Dewalt batteries clip in securely. The trimmer is light and did 12 large bushes and still had 2 bars on the battery. The blower is handy for quick patio blow offs, garage blow outs etc as compared to strapping on the big backpack blower. Both were beyond what I expected.
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Reviewed in the United States on August 13, 2025
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