This set includes 12 individual ER16 collets in English Sizes.

• Total runout less than .0003 on these precise ER16 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 sizes are included, 1/32,1/16,3/32,1/8,5/32,3/16,7/32,1/4,9/32,5/16,11/32,3/8
• Comes in a wooden collet box
• Box dimensions are 5.5"x4.25"x2" tall (with lid closed)