Feature●Please check the product description for compatibility before placing your order●If you are not sure about compatibility, please contact TEL or Email us for inconvenience!●Please check the rotary format, number of nails, root engraving, and number of each piece●In case of inconformity with your own judgment, return shipping fee will be charged●■ Applicable formats: YK650, RC6, RC7, MPC-5S, MPC-6S ■Rotary format RC321, RC421, RC400(T), RC420(T), 500-PRFDescription