The Best Adjustable Dumbbells – Ironmaster vs PowerBlock vs Bowflex Gallery The Best Adjustable Dumbbells – Ironmaster vs PowerBlock vs Bowflex Equipment Guides, Most Popular The Best Adjustable Dumbbells – Ironmaster vs PowerBlock vs Bowflex By David Kiesling|2020-03-16T18:43:07-07:00December 5th, 2016|Categories: Equipment Guides, Most Popular|Tags: Bowflex, dumbbells, Ironmaster, PowerBlock|13 Comments