Comparison : Item # 215-S, Horizontal Hold-Down Toggle Locking Clamp 215
Item # 215-SB, Horizontal Hold-Down Toggle Locking Clamp 215
Item # 215-U, Horizontal Hold-Down Toggle Locking Clamp 215
Item # 215-UB, Horizontal Hold-Down Toggle Locking Clamp 215
Item # 215-USS, Horizontal Hold-Down Toggle Locking Clamp 215