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This is the Bicep Board: a handy tool that helps you isolate your biceps while curling. It positions your hands and wrists to reduce the involvement of your forearm muscles, so you can focus on working your biceps through workouts.
This tool measures 22 inches long and 9.5 inches wide. It has a 1.5-inch dumbbell handle insertion slot. You can also use it with cable machines, resistance bands, and kettlebells with an adapter.
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