Whether electric: No
Whether it is multifunctional: No
Category: Toys over 14 years old
1. Double bearings can be switched at will: matching double bearings, a set of 688 steel ball bearings, a set of R188 steel ball bearings
2. Stable rotation without shaking, easy operation with one hand
3. DIY disassembly at will, cool mechanical modeling, three-dimensional cutting process
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