We can supply all the specifications for worm & worm wheels in China. Pls tell us the following to quote you : 1.Worm : the outer diameter, the modulus for gear, the number of heads and gear depth . 2. Worm wheel : the outer diameter , the inner holes & width, the length and the teeth, etc.If you need worms & worms wheel . Pls contact us.Welcome to your inquiry.