3 ½ x 20 Black SS Roundhead Screws (25)

Marsoni

M251S

$34.90

Get it in 3 business days with 1 day shipping. Friday, May 29

3 ½ x 20 Black SS Roundhead Screws (25)A pack of spare screws which can be used to replace missing items or for many other jobs. Sold in packs of 25. See the technical drawing of any product to see if these screws are suitable for what you need.

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In MY experience, this has been fantastic, spouses car is a 200k+ mileage Kia shortage, which I mean, it’s always burned oil, even the manual said normal operation can burn 1qt per 1,000 miles. Either way, i was adding oil a lot. At least 2 quarts a month or more. After running this oil, I have only added 1.5 quarts in over 2 months. Results obviously not typical, but in my experience, this stuff works. I also use the restore and protect Valvoline on my car, with great results. Scoped it after a few full oil changes and engine looks clean. Great value for what it potentially will do.

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Reviewed in the United States on March 2, 2026