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This set includes 10 individual ER20 collets in Metric Sizes
- Total runout less than .0003 on these precise ER20 collets.
- Made from Alloy spring steel and fully hardened.
- All critical collet surfaces are precision ground for accurate fit.
- The following metric sizes are included, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm
- Comes in a plastic collet box
- Box dimensions are 7.25"x5.5"x2" tall (with lid closed)