Frontline Aluminum Beam Trolley Anchor* Rollers feature a smooth, productive and safe movement thru the I beam following the user for improved productivity * The Easy Slider anchor can fit I beams from 3" wide and adjust up to 10" wide I beams * Anchor is made up of aluminum components making it lightweight and easy to carry around the work area * D ring is centered on the anchorage connector for ease of sliding on beam flanges and can be conveniently adjusted from both sides * Built