Review on Gearwoo 0 8 10Mm Extension Professional Attachment by Pop Henneghan

The adapter is very strong and rotates easily. However, there is play in the drill chuck that causes the drill to wobble during use. It is not possible to drill a clean hole with this adapter. It's probably ok to open up existing holes with a larger drill bit, I still need a method to start a first pilot hole - and this can't be done with my regular drill bit due to limited clearance. So what's the point of this adapter?!?