These jaws are the largest of Oneway top jaws. They have even more mass and size necessary for large bowls and vases. The profiled jaws provide maximum gripping power with minimal damage to the piece
Jaw Dimensions in the CLOSED position: Compression Mode 4 1/4"; Expansion Mode 4 7/8"
Jaw Dimensions in the OPEN position: Compression Mode 5 3/4"; Expansion Mode 6 1/2"
#4 Jaws for Oneway's Stronghold Chuck. They have the mass and size necessary to turn large bowls and vases.
Jaws are profile shaped for maximum gripping power.