This is a pair of lift brackets for the Honda HT3813 and HT3810. This holds the lift carriage at about the miod point of the machine. Listed as parts:

BRACKET, R. RR. LINK (NOT AVAILABLE)
76183-750-010

BRACKET, L. RR. LINK (NOT AVAILABLE)
76184-750-010

Last list was over $20 each. Buy the pair for a deal!

They have some wear around the holes but nothing terrible, still good usable parts. The absolutely worst one is in the second photo.