From discount :    xTool Rotation extension RA2 Pro for F/P/S/M/D series   Rotation extension  for xTool S1, P2, F1, M1 and D1 Pro lasers. RA2 Pro can also be used with the M1, but it must be used in combination with an increase (either an increase with honeycomb plate or M1 increases)! The RA2 Pro Rotary Tool rotates the workpiece during the working process; to enable, for example, the engraving of glasses or rings and balls.   packed, as good as new;     The pricing was done according to Internet search