KitchenAid mixer 9708173 planetary.
KitchenAid 9708173 mixer planetary assembly.  For KitchenAid mixers KB26G1XAC, KB26G1XBU, KB26G1XER, KB26G1XGR, KB26G1XMC, KB26G1XMY, KB26G1XOB, KB26G1XPT, KB26G1XTG, KB26G1XWW, and KT2651.