Comes with 21 Teeth Splined + 7 Teeth Splined + Single D + Small Head Single D + Double D + Pac Man + Small Head Pac Man + Hexagon + Shapde + Six Star.
Convenient to use with every adjustment tool's handle stamped with the tip shape. 1/4 turn is the most used increments when tuning a carburetor.Easier to tell 1/4 turn increments on setting mixture ratio with square handles.