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One Drop Side Effects are a special adjustable weight axle system. With Side Effects you swap out the hub to adjust the inner weight as well as the aesthetics of your Side Effect compatible yo-yo. All Side Effects are interchangeable! Find the Side Effect that fits your style of play perfectly! Aluminum Flat Cap: 3.3 grams
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2025
$14.00