Reference #30189 Chuck Jaws (4) 11.5" x 4.375" x 6.75" Chuck Jaws, Face Plate Type For Vertical Boring Mill Features: Matched Set 3" Jaw Travel Keyed CAPACITY: Overall Dimensions (LxWxH) ........ 11.5" x 4.375" x 6.75" Approximate Jaw Travel ............ 3" Center Distance ................... Straight on Center Hole Diameter ..................... 1" Key Width ......................... 1" EQUIPPED WITH: Matched Set 3" Jaw Travel Keyed