Rectangular suction cups are recommended for handling long and narrow objects and surfaces when maximum lifting force and grip are desired. The rectangular bellows suction cups are especially suitable for products in plastic flow packs, such as candy bars, and when level compensation is desired. The long version with an extra bellow is suitable for objects with large height differences. All rectangular cups are made of Duraflex®, a specially developed material that features the elasticity of rubber and wear resistance of polyurethane. The material is mark-free.