Fangrui Product Details Universal Standard Size No Leaks: For Cornelius , Standard Size (19/32-18) Posts For Of Worn Out Posts That No Longer Seal Properly. Ball Lock Posts With High Quality O-rings To Prevent Leak. Healthy Material Duarable Construction: Made Of Stainless Steel For Long Last Durability, Better Material For . Detachable Design For Easy Daily Cleaning. Parts For Used Kegs. Whole Set Post With O-rings: 1 X Gas Post, 1 X Liquid Post In The Package, Old Posts With The New One Immediately After Opening The Package.comes With O-rings. How To Identify The Gas Post/ Liquid Post: There Is A Circle Of Small At The Bottom Of The Gas Post, And No Marks On The Liquid Ball Lock Posts. Please Make Sure You Have The Right Post For . Material:stainless Steel Colour:silver Package Contents: 1 * Liquid Post 1 * Gas Post With Poppet 2 * More O-rings For Poppet 2 * More O-rings For Post Only The Above Package Content, Other Products Are Not Included. No