![5/16" (0.312) ER20 Ultra Precision Collet (0.0002" Accuracy or Better) - Part # 20-0312-5/16UP - Caliber Tooling](http://calibertooling.com/cdn/shop/products/er_9b31fae1-5799-4ee1-b13e-dddcd6a662d8_1024x1024.png?v=1594510283)
5/16" (0.312) ER20 Ultra Precision Collet (0.0002" Accuracy or Better) - Part # 20-0312-5/16UP
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