I should clarify I didn't get a 495 lbs deadlift with only dumbbells. I'm simply stating I can get a good workout with them. I do glute-ham raises and high rep

I should clarify I didn't get a 495 lbs deadlift with only dumbbells. I'm simply stating I can get a good workout with them. I do glute-ham raises and high rep stiff-legged dumbbell deadlifts, and while my deadlift hasn't really gone up since I've mostly stopped doing them, it hasn't gone down either.