Drilling Systems Extension by Insty Change Review

The Industrial and Scientific category is meant for top-of-the-line products, but this extension is subpar at best. Through trial and error, I found that the extension couldn't handle drilling through tough materials without breaking or bending. The only pro was that it fit easily onto the drill, but that didn't make up for its poor performance. Save yourself time and money by investing in a better quality product.

This is a really good product. It grips bits whether they have a quick change end or not (straight hex bits). Easy to change bits. i really like it I have a bunch of extensions. This is definitely one of the best.

I bought one of these because my Bosch marked hex end sheared off from over tightening (the Bosch quick release still works great but my rider is bigger and can't hold him ). Less than a day it stopped giving bits, even partially inserted. If I hammer on it, it works, but then there is no spring hold. Thought it might be defective, I bought a second one. It didn't work at all. Never! None of them will pick up the bit without force and will not hold the bit after inserting it. Even the bits that