Powerblocks Dumbell System, adjustable from 5 to 95 lbs. Set is in like new condition and equals/replaces 28 pairs of dumbbells or over 2000 lbs of free weights in the space of just 1 pair. Very quick and easy to change out the weight, it just takes the pull of a pin. $600.00 Contact Rich at 242-5202 or email me through Craigslist. it's NOT ok to contact this poster with services or other commercial interests alaska