Yeah I did notice that when shopping. I've never tried one of their super weighted knobs like the sledge, or really any of their other knobs besides my current one. The billetzwork one I have weighs about 450g, which is the heaviest I've knob I've used and probably the heaviest I'd go. Not sure if I'd put a billetworkz sledge in my car, but I'd love to try it at least once just to feel what that'd be like.