its just one pin, it comes like and inch or so long, you fit it over the screw and put it on, you see, the 13/18 clutch bell is a little longer than the original one so you have to extend the part the screw goes into by putting it on the screw before you put the screw on, its like an 1/8 or soo longer but if you dont it will be too tight and the clutch bell wont spin freely. you can get a tension pin from any hardware store