1-1/2-Inch 2-Hole Electrical Metallic Tubing Strap, For Snap On Type, Steel, Use To Provide Support For Electrical Metallic Tubing As Required By The NEC Where Higher Load Bearing Supports Are Desired, Such As When Securing Electrical Metallic Tubing Along The Ceiling. Marked With Trade Sizes, Made Of The Heaviest Gauge Plated Steel Used For Applications.