The Multi Prone Leg Extension / Curl is an easy-to-use machine that provides a great workout for your legs. The rollers automatically adjust for greater ankle comfort, and the lying leg curl position helps protect your lower back. The steel shrouds are powder-coated and clear-coated for a mar-resistant lustrous finish. The standard 200 lb. tiered weight stack is upgradeable in 50 lb. increments to 300 lbs. This machine is perfect for those who want to tone their legs and build strength.