OMG-fltr-kt - This kit contains everything shown for 1 petcock including; 1 tube filter, 1 seal 17mm size, 2 cover screws, 1 black plastic handle. This fits in all the (non square) 16 x 1.0 taps we stock here at Bevel Heaven, but will NOT fit in the 12mm or 10mm taps we stock. The 17mm round seal in this kit (only) DOES FIT the square 12mm paioli taps as well as the 16mm square taps.