Harig item 120-100. 5C Compatible, 24 Increment, Horizontal Spin Collet Indexer 4-1/8" High Center, 1" Max Collet Capacity, 5" Wide x 6" Deep Base, 6-3/8" Overall Height, Motorized Operation. 5C collet holder ground in assembly to under 0.0001 runout. 24 division index plate with precision index pin locks in every 15 degrees to +/- 30 seconds. Draw sleeve for quick set-ups of collets and accessories. Extended base for minimal deflection even with heavier parts. 1/4" diameter mounting hole on top of housing for diamond dresser.