Things I liked: This repair kit fit my mid-1970's Sheridan CB9 (5mm) pump gun. I hadn't touched the gun in decades and it would not hold air. Now it shoots like brand new! The price for the kit is probably close to market value for the rifle as old as it is, but this was my first pellet gun with a lot of sentimental value to me. Now that I know how it all goes together and works, I know better how to keep it running. This kit saved my Sheridan from the scrap heap!!
What others should know: It was a royal PITA to get the valve *carefully* screwed back in without cross-threading it, but other than that everything went fine.