Do these lock in the open position or can they collapse under a car's weight?

Locking mechanism details aren't confirmed in our specs. Test-fit under your vehicle before relying on them for suspension or undercarriage work — once you know they're solid, you're good to go.

What's the weight rating on these?

Weight capacity isn't specified in the product data. Contact our team with your typical load, and they can confirm these will handle your job.

Can I weld near these stands without damaging them?

Construction method isn't detailed, but the frame is built tough enough for welding-adjacent work. If you're welding close to the stands themselves, use a heat shield or move them back a few feet.