It rattles a little bit. Those are 10,000 pound hooks or 5 ton hooks. I got them for 6.99 per hook at Harbor Freight. Weld on hooks are 4 or 5 dollars then you have to weld them. Or you can buy them online for 19.99 already welded on a base and then bolt them on. For 6.99 I got the bolts with it. All i had to do was drill the holes and tighten them down. They say weld on hooks the day are good for 3 ton. Long story short, I love them! Harbor Freight has 50 lynch pins of various sizes for 7.99 at times. Just as an FYI. There is pluses and minuses to everything. I have had quite a load on the hooks and they have held up. People may say crazy things about Harbor Freight, but you always need to choose for yourself what you get and dont get there.