im am in the market for a electric impact wrench to remove the blades on my mowers. i assume i need a 3/4 inch impact wrench because the bolts on the blades on my z master are 3/4 inches. what kind do you have and where did you buy them. im am looking to spend about 100 bucks. just some thing that will do the job... nothing fancy! i went to home depot and sears tonight but all they had were 1/2 inch impacy wrenches... please help! im tired of taking the blades of with a socket wrench every damn day!