This holder tool is a complete joke! I purchased it hoping to use it for my automotive workshop, thanks to my knowledge gained in practice. However, it fell apart as soon as I tried to use it! The quality was cheap and flimsy, and it did not hold the collets securely. The product was advertised to be top-notch, so I was thoroughly disappointed with the misleading information. The only pro is that it was inexpensive, but even then, it was not worth the money. Avoid this product at all costs!