2-in-1 Leg Curl & Extension Machine for Home — 5s Quick Switch, 7.9 sqft Space-Saving, 50×50×1.4mm Steel, 660 lb Capacity

- Function: Dual leg extension and lying leg curl with under-seat height adjustment for a comfortable, effective workout position. - Build: Robust 50×50mm carbon steel frame with 1.4mm wall thickness; machine net weight ~21 kg and supports up to 660 lb. - Adjustability: Three backrest settings and two seat angles to target quads and calves for full-size adult training and progressive workouts. - Padding: Full leather-wrap upholstery with six foam rollers and two cushions, high-density padding for secure support and reduced muscle fatigue. - Plates: Accepts 1" and 2" weight plates (not included); keep total plate load under 130 lb and use the integrated plate storage. - Highlights: 5-second quick function switch, compact 7.9 sq ft footprint for flexible placement, sturdy square tubing for rock-solid stability.