Richard, Be careful when considering the purchase of an impact hammer. There are fairly exact dimensions that need to be followed for the tool to work optimally. My recommendation to you is to contact Keith Bowman through Renner USA. Go to www.rennerusa.com and let them know you want Keith to contact you regarding an impact lever. He will contact you directly and you can discuss your needs. Keith made me an impact hammer about 3 years ago and I love it. I also had a special impact T-hammer made by Mike Swendsen for grand pianos. The dimensional design for the T-hammer is even more critical. I find the impact method much easier than a traditional lever and I will never switch back! Corte Swearingen Chicago
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