One side has 25 teeth and the other has 8 teeth. Large side is 3/4" in diameter and small side is 1/4" in diameter. Center hole is 1/8". I just have one and only need one compound gear.
Hello @corkgiants and welcome to the community,
You can find all the gears available in the store in the Gears, Belts, Pulleys, Tracks, Sprockets & Chains section. However, I gave it a quick look and there is no compound gear with the specifications you mentioned.
Good luck with your search!