Following the excavator bucket tip through an extended range of motion, the Geith hydraulic Pro-Link thumb from DII Attachments offers rotation of at least 180 degrees for improved material pick-up and placement. Custom built of high-strength 400BHN steel, the thumb uses a universal linkage pivot system that can be installed on the carrier's arm without removing the dipper arm linkage. A built-in linkage stop and lock-up pin prevents the thumb from accidentally deploying or damaging hydraulic cylinders, and provides storage for the thumb when not in use. The Geith brand offers Pro-Link thumbs to fit excavators ranging from 20,000 to 80,000 pounds. Estimated list price: $8,300 to $12,200 (not including hydraulic kits).