Item # 04220-3/8, Techniks ER Precision Inch Collet - Series ER20
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- Runout (T.I.R.) only 0.0002"
- Collapse range: 0.039"
- Collet sets available
- Use with PowerCOAT nut for best holding power and cutting tool life
- Compatible with DR, RD, ESX, AR, and BR series collets
- Available in Metric Sizes
Our ER collets are the best in the industry. They are made from high-carbon bearing steel that is heat-treated for improved flexibility and longer life. Each collet is precisely ground and honed using a swiss technique, then individually inspected and tested for quality. Compatible with DR, RD, ESX, AR, & BR series collets. For best rigidity and cutter life use PowerCOAT nuts.
|Range||0.336 to 0.375|