ou’re sure to love the versatility of the Bowflex SelectTech 552 Adjustable Dumbbell. After all, one set can be used for a myriad of workout routines ranging from dead lifts to bicep curls. Importantly, each weight can be adjusted in 10-pound increments; start at 10 lbs and go up to 50 lbs. In other words, you basically get five free weights in one. Now that’s what we call a space saver.