• Collets are to be chosen according to the diameter of the bit. The locking capacity of the collet is referred to the diameter of the male shank of the bit.
  • Note: The formulas to obtain the minimum capacity for an ER 16 collet are:
    • 1-3mm Maximum: Maximum-0.5 = Minimum
    • 3mm + Maximum: Maximum - 1.0mm = Minimum


Cancer or Reproductive Harm - www.P65Warnings.ca.gov
Unit of Measure


Maximum Capacity Ø

N/A 1 mm

ER size

N/A 16
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