Product Description (EN)
Meet the Core Series: Round Core + Square Core
Two spinners. One obsession: tactile feedback engineered by magnets and steel balls.
Both versions use a magnet + steel ball dynamic system to create feedback you can actually feel, not just “see spinning”.
Round Core Spinner (圆核鼠)
The Round Core is all about momentum and return.
We place the magnet on the inner side near the bearing. When you flick it into high-speed rotation, the centrifugal force throws the steel balls outward to the outer ring.
That instant delivers a clear two-stage feel:
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High-speed phase: the balls push out hard, giving a noticeable “armor-opening” vibration pulse.
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Slow-down phase: as RPM drops, the inner magnet pulls the balls back home, snapping them into position.
That gather-and-reset sensation is clean, distinct, and seriously addictive.
Square Core Spinner (方核鼠)
The Square Core runs a different track.
Its rail path is designed perpendicular to the spin axis, so during high-speed spinning the feedback stays calmer and more controlled.
The fun starts when you step in.
Here’s the special move: finger-stop it.
When you “force a stop” with your fingertip, the steel balls search for a balance point within the magnetic track and produce a fine, micro-vibration.
It’s subtle. Not loud. But it hits with a quiet, internal kind of satisfaction. The kind that makes your hand go, “Again.”
Bearing Construction (Both Versions)
Both spinners use an inlaid (embedded) bearing process, which makes rotation stable and consistent.
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Pro: very stable spin, consistent feel across units
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Note: the bearing is integrated into the body, so it’s not designed for user replacement
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Why we chose it: it protects the uniformity and reliability of the tactile experience
Optional “Top-of-Page” Short Blurb (EN)
A dual-variant fidget spinner built on magnets and steel balls.
Round Core delivers a two-stage pulse (push-out + snap-back). Square Core rewards finger intervention with a quiet, micro-vibration finish. Stable rotation, engineered feel, pure EDC satisfaction.
