Ader Monster Kettlebell - 68 kg (150 lbs). If you can lift this one, you will qualify for a job as a UPS driver. UPS has a 150 lb package limit. Although it would be considered cheating if you use a 2-wheel dolly to lift this one. Either way, they look great on your kettlebell rack while hosting a party.
Nothing screams "gravity" like a monster kettlebell.