Polypropylene hose connections with a silicone rubber seal for use with screw threads. Enables the connection of cooling or vacuum hose by simply screwing either style (straight or bent) onto the glass thread instead of forcing Tygon tubing over a serrated glass connector. Both styles have an O.D. of 8mm and an I.D. of 4mm. Style A is bent at a 45° angle with a overall length of 40mm. Style B is straight with a overall length of 25mm.