Specification: Product comes with 4 inch heavy duty iron frame & 12 gauge thickness of frame that provided stability and strength to the structure. UNIQUE DESIGN : Product comes with frame along with seats which can easily assemble by nuts & bolts. A unique pivot points allows the user flexibility in defining the movement path. The Iron Bull Fitness bicep curl provides weight stack upto 150 lbs. Size: Length: 48 inches / 122 cms Width: 35 inches / 89 cms Height: 55 inches / 140 cms