ER32 R8 Collet Holder and Collet Set, Test and Review

Banggood.com kindly sent me these items for appraisal and review. Eventually got to testing and this video covers the findings. We found a run-out problem which seems due to the collet holder have its locking nut not running true, which leads to a collet being itself out of truth. Could be the threads at fault. This is probably a one-of faulty item and we hope to get a replacement eventually to permit fresh tests. Overall finish is otherwise very good.
Below are links to relevant site pages --
Collet Chuck Holder: https://goo.gl/TEtKRg
ER32 Chuck Collet: https://goo.gl/
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