ER Precision Collets - Inch Sizes
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| COLLET SERIES | LENGTH | DIAMETER |
| ER 11 |
18mm (0.708in) |
11.5mm (0.45in) |
| ER 16 |
27.5mm (1.08in) |
17mm (0.67in) |
| ER 20 |
31.5mm (1.24in) |
21mm (0.83in) |
| ER 25 |
34mm (1.34in) |
26mm (1.02in) |
| ER 32 |
40mm (1.57in) |
33mm (1.31in) |
| ER 40 |
46mm (1.81in) |
41mm (1.61in) |
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ER Precision Collets (Inch Sizes), Standard 0.0004in TIR - Southeast Tool