Blade bearings are loose. I’m not sure if it is easy as just replacing the blade inside of the blender container but other than that, it works great even with the cracks on the outside lid it’s not broken or split open. It’s just stress cracks. Everything else is in good working order. I think it’s just the bearings that needed to be replaced with the blade. You can see where I’m pointing with my finger! Please message with any questions we ship out the same and next day thanks
eBay