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Amazon.com: MaxLLT™ 6 FT Extra Long AC Adapter for Casio CTK-431 CTK-491 Keyboard Wall Charger Power Supply Cord PSU : Musical Instruments
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Amazon.com: HQRP Elastic Dust Cover w/Bag compatible with Casio CTK-4000 / CTK4000 / CTK-4200 / CTK4200 / CTK-491 / CTK491 Electronic Keyboard Digital Piano : Musical Instruments
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