Grizzly G1064 Cross-Sliding Vise Bottom slide travel: 4-Inch; Jaw opening: 3-3/4-Inch; Jaw width: 4-Inch; Large 4-Inch capacity; Top slide travel: 4-Inch Jaw opening: 3-3/4-Inch Jaw width: 4-Inch Large 4-Inch capacity Top slide travel: 4-Inch