The Hammer Strength Select Back Extension is a fundamental part of the strength training progression. There’s a five-position adjustable start mechanism for individual range-of-motion preferences, the lumbar pad helps position users correctly in relation to their axis of rotation, and two non-slip foot positions fit all sizes. The 22 pieces in the Hammer Strength Select line provide an inviting introduction to Hammer Strength equipment. PRODUCT FEATURES CABLES 7x19 strand construction, lubricated, nylon-coated cable meets U.S. military specifications INSTRUCTIONAL PLACARDS Easy-to-follow instructions illustrate proper use and muscles trained Axis of rotation marked with red indicator to help cue correct alignment BELTS AND PULLEYS 4-1/2" (11 cm) and 6" (15 cm) diameter fiberglass-impregnated nylon pulleys feature sealed bearings CUSHIONING Pads are molded with radius on edge for improved comfort; All edges are stitched to eliminate any folds in the material that would limit durability