It’s not actually a 45 lb plate, it’s a 20 kg plate. For Americans they round it off to 45 lbs (though it’s closer to 44 lbs) and will even label it as such. But full size Olympic plates go by kg and are color coded as well: Red = 25 kg/55 lbs, Blue = 20 kg/44 lbs, Yellow = 15 kg/33 lbs, Green 10 kg/22 lbs, and White…