- Durable construction: Heavy-duty steel frame provides a robust, stable platform with a high load capacity for intense leg training. Abrasion-resistant powder coating resists corrosion, and vinyl-coated foam roller pads stay durable against wear and sweat. - Flexible compatibility: Fits 16, 18, and 26 mm hole systems. Mounting screws and bolts included. Note: only attach to pipes with penetrable holes. Please verify compatibility before installation. - Adjustable and versatile: Seated leg extension and curl with 8 adjustable positions for height and training intensity, ensuring a proper fit and consistent resistance for each user. - Compact, focused design: Optimized for targeted leg muscle development with a compact footprint and simple operation, suitable for both home and gym environments. - Practical applications: Use at home for regular leg-toning routines; in the gym for a quick leg-extension warm-up or supplementary work; and for progressive resistance training in rehabilitation or sport-specific conditioning.