Electric Magnetic Lock with Z and L Bracket 280KG 600LBS Holding Force Electromagnet Lock 12V Fail Safe NC Mode Single Door for Access Control System

As long as you have what you need it works great, 12v set up holds my door super hard, no problem.

Weak and will not hold a door closed.

The holding force of this magnetic lock is solid and works well as advertised. However, the included screws are very cheap and prone to stripping or breaking during installation. I strongly recommend using your own higher-quality screws for a secure and trouble-free setup. The power connector design is a major flaw. The circuit board is positioned right next to the end cap, leaving almost no space to insert and tighten the wires without risking damage. Attempting to do so will likely break the solder connection on the board. To avoid this, you must remove the end cap and either move the board inward or connect the wires with the end cap off. Overall, this lock can be a decent choice if you have the tools, knowledge, and patience to deal with its shortcomings. It's priced well for what it offers, but if you're looking for something easier to install and more reliable out of the box, consider a better-made alternative.

used to hold down a vice

Works fine, not sure how weather proof it is so had to seal it with silicone tape.

Don’t know how you miss this in production but essential worthless if I can’t remove the mounting bracket