Black Iron Strength Bicep Builder® 2.0 Custom (Color: Navy Blue)

(Color: Navy Blue)

Solid one piece construction with no welds or bolts using a proprietary press-through technology making Black Iron Strength® Dumbbells virtually indestructible

This one-piece construction is accomplished through proprietary technology using a 25 ton press-through

and a pair of 1 lb

Black Iron Strength Bicep Builder® 2.0 Custom (Color: Navy Blue)Quick Hits The Bicep Builder allows the user to maintain constant resistance on the bicep muscle throughout the entire range of the curling motion. The user cannot rest the bicep muscle while performing the bicep curl with the Black Iron Strength Bicep Builder. The Bicep Builder is designed with a built in leverage factor to provide the bicep muscle with maximum resistance when performing a bicep curl. Built in cam effect during the rotary movement