2021 CAT 330-335 FULL ROTATION THUMB , 4 TOOTH DEISGN, CATERPILLAR FULL ROTATION THUMB, CATERPILLAR PART NUMBER 578-2516, FOR PIN ON USE, MESHERS WITH 42" BUCKETS SD(541-1770) GD (552-8269) HD (541-1747), MESHES WITH 42" BUCKETS GD (552-8209), HD (552-8239), SD (552-8251), MESHES WITH 42" BUCKETS SD(541-1770) GD (552-8269) HD (541-1747), SOLD AS IS,