Thanks the eBay member spalato68 provide the block train video.
as the link,
https://www.youtube.com/watch?v=pKVqMA94hKg&t=25s
Specification:
DC 12V 15000RPM version,5-pole coreless motor
Tips: we also have 12V 12000RPM motor in our store.
Package Include:
Motor x 1pcs