This clever vacuum trap features a 45/50 Rodaviss™ joint. This threaded joint provides a vacuum tight seal without grease and, if frozen/seized, can be taken apart using the optional loosening ring. The serrated hose connections are 13.5 mm at the smallest serration and 15.5 mm at the largest serration. This complete trap is supplied with the upper body (stopper), lower body, CG-305-223 Viton O-ring, loosening ring, and Rodaviss cap. The overall O.D. is 48 mm and length is 300 mm.