RIMSports arm curl blaster leverages the power of its performance-enhancing design to quickly, easily, and naturally prevent your arms from flaring when using heavy curl bar weights, thus concentrating all the power into the bicep muscles. Our bicep curl support isolator is not a curl bar attachment but is uniquely designed like a curl machine bicep builder to encourage consistent, proper form your upper arms will remain safely locked in the proper position, allowing for an arm bicep curl, heavy-duty workout. If you’re looking to get in great work for your biceps and triceps, then this weightlifting body belt is a great piece of arm workout equipment, it's actually a better alternative in many ways to the preacher and spider curl exercises. This bicep curl bar has over preacher curl or spider curl equipment is in its versatility with bicep support, you can curl using an EZ curl bar, a straight bar, or dumbbell. Our padded, dense elbow pads, mimic a curl barbell pad. Our muscle bomber can fit any sized body and is made of thick gauge aluminum and has padded support in the elbow and neck for comfort and stability.