Review on HHIP 3900 5122 ER 32 Straight Extension by Brian Sage

The collet holder itself is good. Works correctly. You can hardly go wrong there. However, collets are a separate topic. The collets themselves vary quite a bit, some going into the nut very loosely and some not fitting at all. I haven't used this collet but have used it a few times because sizes like 1/2 and 3/8 don't fit the nut. When you insert it into a nut, it shrinks so little that the tool cannot be inserted. I am disappointed but I will only go with a high quality branded collet set. It was cheap so I decided to give it a try.