Biceps & Triceps Muscle Builder Bicep Isolator Arm Strength Training Machines Muscle Gains for Bodybuilding Weight Lifting Dumbbells & Barbells Minimize injury and build bigger biceps, triceps and shoulder muscles faster. Features: It enables you to maximize biceps and triceps muscle gains by locking your elbows in the perfect position.  Padded neck brace and elbow pads offer superior comfort and stability during intense workouts. Adjustable polyester strap allows for a proper posture according to all individual body types. Use it with a bar or dumbbell, building bigger biceps, triceps and shoulder muscles faster. Specifications: Material: Aluminium alloy + Polyester + SBR Color: Pink / Red / Blue / Black / Yellow ( optional ) Product Size: 58 * 10 cm / 22.8 * 3.9 in Product Weight: 800 g / 1.8 lb Package List:  1 * Muscle Builder