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60000rpm, 135mm, 130g
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60000rpm, 135mm, 135g   (Double Bearing)
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60000rpm, 140mm, 240g (Economy)
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30000rpm, 145mm, 270g (Economy)
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30000rpm, 145mm, 270g (Economy)
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25000rpm, 123mm, 330g (Economy)
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25000rpm, 156mm, 840g