Cannon Curl + Fit Grips - Arm Blaster Support Plus Thick/Fat Bar Training COMBO PACKAGE - Cannon Curl + Fit Grips 2.0 - Arm Blaster Support Plus Thick Grips Bar Training MUST OWN - Combining Fit Grips and the Cannon Curl by Core Prodigy will transform your grip and arms! By increasing the diameter of the bar, you will feel a greater muscle activation in your hands and arms. This increased muscle activation leads to bigger, faster gains in muscle size and functional strength (especially in overall arm size). We guarantee you'll feel the difference from the very first time you use them. BEST DESIGN - The Cannon Curl perfectly supports your elbows and enables you to keep the correct posture during curls. Users immediately notice proper bicep isolation when curling with the Cannon Curl. HAND CRAFTED - The Cannon Curl's adjustable belt is made of heavy duty webbed nylon. The neck pad is made of thick neoprene. Double brass rivets are used to properly secure nylon strap. Now made with thicker gauge aluminum to support higher weight levels. LIFETIME WARRANTY - Fit Grips have a 2 inch outside diameter and are 4 5/8 inches long. Inside diameter is 1 inch. They are made of high density silicone which allows years of maintenance free use. TRUSTED - Core Prodigy designs and manufactures high quality fitness equipment that you can rely on.