OILMEC’s Slip On Spring Bow Turbolizer has the same Operation, General Design, Features and Characteristics as the Hinged Welded Turbolizer. Collars are specially designed with roll formed peripheral ridges which provide extra rigidity. Slips On Turbolizers are provided for direct installation on pipe by slipping on and can be provided with SetScrew for elimination of Stop collar. They are shipped in assembled condition only. They are available in 4 ½ ” to 20 ” sizes.