ER16 series coolant collets have a capacity of .142-.394 inches. Each ER16 coolant collet has a range of .015 inches. The size indicated on the collet is the largest size it can hold and can be collapsed smaller within its collapse range mentioned above. For example, ER16-1/4 can grab a round shank from .250 diameter to .235 diameter. Please refer to our ER16 Collet print for general ER16 dimensions.
