What is the difference between Ajax non-turn type zip gun chisels and turn-type chisels?
Ajax non-turn tools have four ball slots rather than a collar. This allows the balls in the retainer to seat into the slots, preventing the tool from turning. It also allows the tool to be indexed for different cutting positions. Non-turn chisels must be used with an Ajax Kwik Change Retainer, #3300 or #3700.