Industrial Music Electronics Hertz Donut MKII (Firmware V2.0)

Industrial Music Electronics Hertz Donut MKII (Firmware V2.0)

Marsoni

M251S

$190.00

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

Industrial Music Electronics Hertz Donut MKII (Firmware V2.0)Fully tested, perfect working condition. Minimal rack rash. About Used Items: All modules include a power ribbon cable and M3 screws. Please be aware that although all used items have been tested to work as they are designed, they are sold "As Is" and are not accepted for returns unless there is a defect in the used item. Used items DO NOT qualify for Free Shipping, if you order a new item with a used item you will be charged shipping based on the

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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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If your dog pulls on these (and why wouldn’t he?), the rope immediately comes out. Turns out they just fuse the ends of the nylon rope together, which is no match for a dog playing tug. Any dog, any level of pulling will dismantle these. We’ve managed to reinsert the rope to a couple of these and KNOT it, which gives you a shorter rope but a toy that can withstand some play. But if I had wanted a DIY toy, I’d have used the balls and rope I already own.

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Reviewed in the United States on December 11, 2025

Verified Purchase

Lesly

Lexington, US

★★★★★ 3

Not for super chewers!

Color: Four colors, Size: 5cm (with rope), Color: Four colors, Size: 5cm (with rope)

These rope ball toys arrived today. My poodle puppy loves rope ball toys and playing tug of war. These didn’t last 10 minutes. For context, she is 1 y.o., 30 lbs., is not teething & has her adult teeth. She did this on her own- we were not playing tug of war at the time the toy fell apart. At least there are 3 more in the package & when the rope is done, we’ll still have the balls to play with.

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Reviewed in the United States on April 15, 2026

Verified Purchase

Kimberly Farnham

Charlottesville, US

★★★★★ 4

Great for small dogs

Color: Four colors, Size: 5cm (ball only)

Durability

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Reviewed in the United States on February 28, 2026

Verified Purchase

jewelrycook

Phoenix, US

★★★★★ 5

Bouncy, not hard, and good value.

Style: Fetch Balls (Pack of 10), Size: 2.5 inch

Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value. By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!

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Reviewed in the United States on February 16, 2026