Mine is 4x4 stacked, with a weight hole (imagine that, a plastic ball that needs a weight hole) and gives plenty of movement and hit. This also makes it so that you do not have to be so perfect, and will not be scared at the smel of oil.
Dave
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Romans 1:15&16; "So much as is in me, I am ready to preach the gospel to you to you that are at Rome also. For I am not ashamed of the gospel of Christ; for it is the power of God unto salvation, to everyone that believeth; to the Jew first, and also to Greek!
F.O.S. Members, Our Assignment Should We Choose To Accept It, Polish and Sharpen Up Our Saws; Pins Have Been Spotted, and We Are To Saw 'Em Up!!
Bomb Squad Certified and Licensed Diamond Cutter