Q235 square steel,2.5mm thick

Great for dumbbell fly, dumbbell bench press, dumbbell rowing, sit-ups, use with a variety of dumbbells.

Multifunctional Workout Station Adjustable Olympic Workout Bench with Squat Rack, Leg Extension, Preacher Curl, and Weight Storage, 800-Pound Capacity, Gray

Vitalsporthub.com Adjustable Weight Bench Foldable Workout Exercise Bench with Automatic Lock for Upright Incline Decline and Flat Full Body Exercise 

 Back Hyperextension Adjustable Roman Chair For Strength Training Back Machines