materials and construction The leg curl extension machine is carefully crafted from heavyduty steel to provide a sturdy, stable structure with a load capacity suitable for demanding leg training. An abrasionresistant powder coating protects the attachment from corrosion and wear, helping it last longer in varied workouts and environments. Eight adjustable positions The leg extension attachment offers eight adjustable positions, allowing a precise fit for users of different sizes. It is designed to be versatile and can support strengthening exercises for multiple muscle groups, including triceps, biceps, chest, shoulder and back muscles. Stable, strong, and comfortable Built with quality steel, the unit can hold up to 600 pounds, providing reliable support during intense workouts. It is stable and easy to handle. An extrathick foam pad delivers softness and wear resistance for a comfortable, efficient training experience. Mounting compatibility and practical design This leg extension and curl machine is intended to be mounted on a power rack for use. It is compatible with racks that have 16, 18, or 26 mm hole patterns and accepts 25 mm or 50 mm diameter barbell plates. Designed for seated leg extension and curl exercises, it supports effective leg muscle training in a compact, integrated setup. Use scenarios Home gym setup: Mount the attachment on a power rack to perform seated leg extensions and leg curls, using standard weight plates. The 8position adjustability ensures a comfortable fit for different users, with a padded surface for added comfort. Multiuser gym or training studio: Install on a shared rack to provide versatile leg work for clients of varying heights and strength levels. The load capacity and sturdy build support repeated use. Balanced training programs: Use as part of a fullbody or legfocused routine to target leg muscles while also enabling related upperbody work as part of a comprehensive strength plan.