Dividing Head Set 3 Jaw Lathe Chuck Dividing Head 5 Inch with Tailstock Dividing Plates for Milling Machine Workpieces can be divided into any week for the division or straight line for indexing.The workpiece can be installed into the required angle (vertical, horizontal or inclined.through the exchange of gears, the indexing head can be connected with the table drive system, so that the indexing spindle with table feed motion for continuous rotation to milled spiral surface and the rotary surface. Item SpecificationsSwing: 7-7/8"Center Height : 3-15/16"Headstock Taper: 7 B&SSpindle Bore (Clear Through): .708"Spindle Mount: 1-1/2" x 8 TPISpindle Taper Runout: .0006"The front of dividing head dimension: 7.59”,5.51”,6.81”,3.93”,6.53”,3.54”,0.63”The tail of the dividing head dimension:6.89”,3.42”,4.21”,3.93”,5.12”,3.62”,0.63”Dividing Plate: Quantity of dividing plate’s hole (Helical gear reduction ratio 1:40)Dividing Plate A: 15,16,17,18,19,20Dividing Plate B: 21,23,27,29,31,33Dividing Plate C:37,39,41,43,47,49Package contentDividing head set x 13 x Dividing Plates1 x Tailstock1 x 3 Jaw Chuck