This set includes 20 individual ER32 collets in English Sizes.

• Total runout less than .0003 on these precise ER32 collets.
• Made from Alloy spring steel and fully hardened.
• All critical collet surfaces are precision ground for accurate fit.
• These collets are true English collets. They are not relabeled Metric collets
• The following collet sizes are included,  5/32,3/16,7/32,1/4,9/32,5/16,11/32,3/8,13/32,7/16,15/32,1/2...
•   17/32,9/16,19/32,5/8,21/32,11/16,23/32,3/4
  
• Comes in a wooden collet box
• Box dimensions are 12.25"x5.75"x2.25" tall (with lid closed)