You are buying 1 Pulsator Repair Kit for Surge Pulsators. This kit includes 4- Piston Leathers, 2- Cylinder Gaskets, 4- Piston leather expanders, 1- lock washer, and 1- O ring. This kit is brand new from the manufacturer. Shipping will be Free First Class Mail to USA locations.Please contact me with any questions you may have. Thank You.