Description: Glass Ball Impeller Assembly Only. MADE IN THE USASize: 1000mLScrew Cap: Blue PP, 100mm OD x 22.4mm TCap Seal: Teflon, 95.3mm OD x 10.4mm TSealing Ring: Blue silicone rubber, 91.4mm OD x 76.2mm ID x 6.1mm TFlex Tube: Soft silicone, 76.2mm OAL, 0.312” OD x 0.248” IDMagnet Tube: Type 1 Class A Borosilicate Glass, 165mm OAL, 28mm OD ball, houses one cast alnico magnet