The Body-Solid Tools MB229A Aluminum Curl Bar attaches to any home gym or cable/pulley-based weight machine and helps you perform curls and numerous other exercises. The smooth, fluid center of the MB229A swivels and rotates guaranteeing constant, steady, uninterrupted motion and increased exercise variety. Product Features Attach to home gym cable or pulley machine Perform curls and other exercises Angles designed for peak biceps and triceps contraction High-strength, rust-proof and lightweight 1- 1/4" aluminum Rotating and swiveling center for more fluid motion Product Weight: 2.2 lbs. Dimensions: 30-1/2"x 3-1/2"x 1-7/8"