The LifeCore Fitness CoreBells Deluxe Selectorized Dumbbells (5-55 lbs.) help you to safely and efficiently strengthen and tone your upper body! These expertly-designed dumbbells feature commercial grade cast iron plates that increase in 2.5 lb. increments. Unlike other brands that only permit heavy 5 lb. increases, the LifeCore CoreBell targets more gradual escalation for a 5-55 lbs. range. These plates replace 44 sets of weights and allow for over 50 exercises! It would take 1260 lbs. of free weights to replace LifeCores set of dumbbells! The slide and lock system makes adjustments quick and easy and the contour comfort handle ensures a more secure and effective workout. ....read more