![8mm (0.315) ER20 Ultra Precision Collet (0.0002" Accuracy or Better) - Part # 20-0315-8.0UP - Benchmark Tooling](http://benchmarktooling.com/cdn/shop/products/er_b9ac9600-65e9-429a-9166-6ca0d2e5691b_1024x1024.png?v=1594511694)
8mm (0.315) ER20 Ultra Precision Collet (0.0002" Accuracy or Better) - Part # 20-0315-8.0UP
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