TIR. The central thru-coolant collet chucks have tapered shanks ground to AT-3 specifications and specially ground clamping nuts to ensure roundness. They are available in lengths to suit ER-11, ER-16 ...

The Mega ER16 and ER32 Collet Chucks are only available in CAT tapers ... A Micro drill available in diameters from 0.20 mm to 1.50 mm offers a positive tolerance. BIG Kaiser also expanded its Phoenix ...