The package arrived quickly (3 weeks) and safely - no damage. The flexible shaft fits properly on two dremel clones that I've tried. It is heavier than I expected, which should actually be an asset with steadiness. I have no experience with any others but it seems decently made. What looks like an allen key is just a bar that goes into a hole to lock the shaft for tightening the collet. Locally they're asking much more for a similar product. I'm happy with it and the seller. Thanks!
Well packed and very useful. The product is iseful for its price. Nice materials and very cheap, comparing it to tje 30 USD that it can cost in a bricoshop.