COMP Cams Steel Retainers 3/8in 1.437in

Marsoni

M251S

$100.40

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

COMP Cams Steel Retainers 3/8in 1.437inValve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams Steel Retainers are the perfect solution to this problem. COMP engineers used 3D CAD with FEA to design retainers with a modern and advanced contoured top profiling for lower stress, increased lift and a reduction in mass. The retainers are CNC machined to exact tolerances using CAD Cam software. All COMP retainers use only high

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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These cartridges fit the Loutsbe brand Microneedle Instrument that I purchased from Amazon. After much research, I was so happy to find these as it seems there are many different types out there. It can be rather confusing finding the correct cartridges. The quality of these is excellent and they screw in perfectly. These have the treads above the little spring.

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Reviewed in the United States on June 4, 2026

Verified Purchase

Melinda

Houston, US

★★★★★ 5

Micro needling replacements

These cartridges all came well sealed, and well aligned so when I use them, they don’t stab deeper in one spot than the other and they fat my micro needling pen.

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Reviewed in the United States on May 28, 2026

Verified Purchase

CAM

Lake Worth, US

★★★★★ 5

Do yourself Micro needling

Easy to use and lives up to my expectations.

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Reviewed in the United States on February 5, 2026

Verified Purchase

Lira Beautiful Spa Academy