BUILD BIGGER, STRONGER ARMS: The Alpha Grips will instantly recruit more muscle fibers in your arms and forearms by increasing the diameter of any barbells, dumbbells, cable attachments and exercise machine handles. Using fat grips is the equivalent of using a fat bar but with so many more possibilities at a fraction of the price. FULLY VERSTAILE: Simply wrap the Alpha Grips around any regular dumbbell, barbell, pull up bar, push up bar, cable attachment or any other bar and turn it into thick bar training. These grips will triple the size of regular bars (3.0 inch diameter) and turn your workout into an extreme muscle building workout.