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ruby42
Reviewed in the United States on June 1, 2025
Exactly what I needed.
Brian Haruno
Reviewed in the United States on May 8, 2025
I purchased this for my ProtoArc EM01 NL, and it's a lot smoother than the factory trackball. A perfect fit and well worth the affordable price.
Jordan Z.
Reviewed in Canada on May 31, 2025
My Logitech M575 was starting to get a little rough and scratchy; turns out that there were some barely even visible scsuffs/rough spots on the ball (probably from repeatedly being dropped lol), that were just enough to sort of catch on a bearing when that part of the ball passed over one. I couldn't find my old Marble+ with it's classic red speckled ball, so I ordered one of these. Specifically in purple, which ended up looking pretty good if you ask me. Very deep, kind of dark purple, with some fine sparkle to it.Was very surprised to find just how much smoother a different ball could make this mouse feel. It's almost *too* smooth, though I quickly got used to it. I do like the [extremely subtle] bit of "grit" that the original Logitech balls have, which just feels like it keeps the ball from moving when you're just resting your thumb on it, but don't intend to move the cursor, but those balls look and feel completely smooth in the hand, so I always wondered if that grit I described was all in my head... but after popping this thing in, I'm fairly certain I wasn't imagining it. It feels like it's floating on lubricated roller bearings in comparison to the original. Even better: it actually feels like it fits *better* than my stock Logitech ball. Not that that was a bad fit, but when switching directions, you'd occasionally hear a little tick as the ball's weight shifted from one bearing to the one on the other side. This doesn't do that.Kinda wild. Anyway, it's a ball, and apparently moreso than the perfectly adequate one I had before!? 😅
Customer
Reviewed in the United States on May 29, 2025
Works great with my ERGO 575. The ball is a hair smaller than the original it came with but because of that it moves smoothly even better than the original ball. I wish the purple was a little bit brighter but overall happy with my purchase. It's the little things when you work at a desk for a living!!!
f8ldzz
Reviewed in the United States on May 28, 2025
Even after cleaning it several times, the green track ball skips and stutters across the screen.I then used the (new) blue track ball - tracks flawlessly.I really wanted the green track ball to work, as my original (blue) track ball was getting old - the green would've made a nice change of pace.These new track balls are slightly undersized (by 0.05mm) versus my original blue track ball that came with the Logitech M570.Even though the description says it's supposed to work with this hardware.These new track balls fall right out of the socket due to being slightly undersized, when you flip the mouse upside-down.I came across these things by accident: I was looking for Sanwa (Japan) DMM's, and I came across these track balls.I don't think they have anything to do with Sanwa Japan, as the boxes are marked: "Made in China"
William H. Cleveland
Reviewed in the United States on May 23, 2025
It might be a very slightly looser fit than the original ball from my Logitech MX Ergo, but it works well. You can only tell the difference if you flip the whole thing over; the pointer moves a little more than it used to, but it isn't really a problem. Also, the red ball shouldn't get lost as easily as the original gray one.
Michele
Reviewed in the United States on May 23, 2025
This one worked great on my Logitech MX Ergo S. This was the blue color, I had also purchased the green one, but that did not work well so I returned it.
ddegroat
Reviewed in the United States on May 19, 2025
That little item that makes the mouse "yours". Good price for the item.
Ron Stonecastle
Reviewed in the United States on May 11, 2025
I needed this because my original got a nick in it, and I was surprised. This ball work better than the OEM. It rolls smoother, and seems to have a better finish. I bought more.
E
Reviewed in Canada on March 6, 2025
Seems a little lighter than other brand 55mm ones, but it's smooth and I see no faults or defects.
Customer
Reviewed in Canada on February 22, 2024
Works fine in my logitech MX ergo mouse. I didn't have a problem with the old ball but it came with a grey one, and I miss the classic red color these all used to have, this fits the bill nicely.
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