OBS-OL SERIES PIN LOADED MACHINE is a premium strength-training series for gyms. It uses 50*100*2.5mm flat elliptical steel tubes for the frame, 2mm thick hot-rolled full-enclosed guards for safety, and 20mm high-hardness stainless steel guide rods. Equipped with 80KG cold-rolled steel weights, plus PA pulleys, stainless steel screws, and electrostatic spraying, it’s durable, safe, and sleek for effective training.