You are buying 1 ring kit for 1 piston in the following sizes Stardard Size, .020/.50mm and .030/.75mm for 03-08 DODGE 345 5.7L "2,D,T" 16V Hemi V8 OHV "2,D". I will not shipped until you email me what size of ring kit that you need. You are only getting 1 ring kit for 1 piston. Any Questions feel free to ask.