The schunk Hydraulic Holder is an excellent back end. It holds h tolerance tool shanks withing microns at 100mm from collet face. Primary use is drilling and reaming, secondary use fine finishing using endmills. You can use this holder for roughing softer materials like aluminium but is not reccomended by schunk to be used aggressively in harder materials like steel. 2 collets will be sold with the chuck, a 12mm and a 8mm collet, these were baught seperatly from the chuck they cost roughly £60 plus vat and delivery directly from schunk. Other 20mm reducing collets can be used in the chuck like the ones from kintek. Any questions please message me.
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