JACFit ARM BLASTER The Arm Blaster, also know as cannon curl, supports your elbows and helps you to keep the perfect posture for curls. You will IMMEDIATELY feel the difference, notice the bicep isolation for the best results. Our JACFit Arm Blaster is made 100% of thick aluminium, it makes it solid so you don’t have to worry about limiting yourself. HOW TO USE IT 1- Adjust the strap in order to have your elbows perfectly aligned with your body. 2- Grab your dumbells, position you arm 3- Do you curl as usual without having to focus on your form. FOCUS ON YOUR REPS!! 4- You can also use it for your triceps extensions! WARRANTY Simple, not satisfied, we’ll refund you!