‎0.65 Kilograms

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BUILD ARM SIZE AND STRENGTH – Fat Gripz will help you build bigger, stronger arms. They work by wrapping around barbells, dumbbells, pull up bars and exercise machine handles and increasing their diameter
TIME-TESTED METHODS, NEW SCIENCE – Science has now confirmed what athletes and bodybuilders have known for decades – that using a thicker diameter bar causes much greater muscle activation in the arms which leads to incredible size and strength gains