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Ships within 48 hours · Estimated delivery Jun 15 - Jun 20
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Description
IR45x50x25 INA Needle Roller Bearing Inner Ring 45x50x25mmThe inner ring for needle roller bearings serves as an integral component within the intricate machinery of precision bearings. Crafted with meticulous attention to detail, this inner ring is designed to accommodate needle rollers, facilitating smooth and efficient rotation within the bearing assembly. Precision ground and hardened, the inner ring provides a robust foundation for the needle rollers, ensuring optimal load distribution and minimal
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 2173 reviews
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Product Reviews
★★★★★ 5
my fav now after using 50+ pillows
Style: Back Sleeper, Pattern Name: King
I have always struggled to find the perfect pillow, and so far I have had 50+ pillows. Personally, I like my pillow to be on thinner side as I look for more support for my neck.
This is my first time buying pillows online, because I like to physically touch and feel the firmness and thickness before I purchase my pillows. I am so glad I did it! These pillows are just PERFECT for me! Perfect firmness, perfect thickness and perfect material.
One thing I suggest is that be extra cautious when you open the package. These pillows were rolled and put in a relatively thin shipping bag, so when you open with sharp objects be careful not to cut your new favorite pillows!
I let the pillows sit for about 48 hours before I started using them, but I assume you don't have to wait that long.
Overall, I am very happy with my first online pillow purchase with Serta!
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Reviewed in the United States on April 1, 2020
★★★★★ 2
Not worth it
Style: Side Sleeper, Pattern Name: King
Feel nice and fluffy for couple months, then go flat
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Reviewed in the United States on September 5, 2025
★★★★★ 1
14% polyester filling
Style: Side Sleeper, Pattern Name: Jumbo
It has 14% polyester filling. The description is not complete in amazon.
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Reviewed in the United States on January 5, 2026
★★★★★ 5
Definitely beats sleeping on the floor!
Color: Grey, Size: Twin
I was sleeping on the floor with my dog after she had emergency surgery and this helped me get through those tough couple of weeks. Comfortable and not too heavy. Comes with a bag to store it in and helps make it easier to move around.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Comfy
Color: Grey, Size: Cot
Very comfortable even for large children and adults.
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Reviewed in the United States on May 16, 2026
