Abdominal Crunch/Back Extension Machine is a versatile, ergonomic dual-function trainer that provides a smooth, safe and effective workout. The trainer features a main frame made of 118*75*3.0mm semi-elliptical tube, a functional area made of 120*50*3.0mm flat oval tube, and a sports arm made of 80*40*3.0mm, which is durable. The connecting tube is 50*100*3.0mm tube, and all tubes meet the Q235 safety and reliability standards.MG-6766 is a commercial waist, back and abdomen dual-function trainer. It is a dedicated product for exercising abdominal and back muscles. Luxurious and stylish. The unique design of the equipment allows users to perform natural flexion movements for optimal abdominal muscle contraction