Fixed (Mechanical) Thumbs:

24" Mini Excavator Thumb for Machines up to 9,000 lb - $725
30" Mini Excavator Thumb for Machines up to 9,000 lb - $750
40" Excavator Thumb for Machines 8,000 to 16,000 lb - $825
44" Excavator Thumb for Machines 15,000 to 20,000 lb - $850
Installation is $130 if needed