ethirteen Helix Core espec Cranks for ISIS Spindle - 155mm, 21.5mm Offset, Black

ethirteen Helix Core espec Cranks for ISIS Spindle - 155mm, 21.5mm Offset, Black

Marsoni

M251S

$104.98

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

ethirteen Helix Core espec Cranks for ISIS Spindle - 155mm, 21.5mm Offset, BlackThe ethirteen Helix Core espec Cranks offer high end drivetrain integrity and a premium look at an exceptional value. Forged from tough 6066 T6 aluminum, these ultra short 155mm crank arms are optimized to maximize ground clearance on modern low BB e MTBs, effectively eliminating pedal strikes. Featuring a 21. 5mm offset for a compact, tailored Q factor on standard ISIS spindle motors, they come complete with an alloy self extractor system, steel

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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

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IT Secure Force

West Palm Beach, US

★★★★★ 5

Excellent dog balls — safe design and very durable

Style: Fetch Balls (Pack of 3), Size: 2.5 inch

These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference. Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design. Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.

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Reviewed in the United States on December 1, 2025

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mike

West Palm Beach, US

★★★★★ 5

Great ball for heavy chewers

Style: Assorted Balls (Pack of 3), Size: 2.5 inch

Great toy for my Doberman. She chews through tennis balls in about 15 minutes but these are very durable. She likes to chase them but also just chew on them.

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Reviewed in the United States on April 26, 2026

Verified Purchase

Birmingham, US

★★★★★ 5

Durable

Style: Fetch Balls (Pack of 2), Size: 3 inch

Very bouncy. I like the noise it makes when you throw it. Pretty durable. Good size. Dog loves to play with them. Good material. Easy to use.

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Reviewed in the United States on April 5, 2026