PoolDawg - The Pool Player's Best Friend
PoolDawg - Loyally Serving Pool Players Since 2003.
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Just got a set of these. My table has pretty wide pockets which makes it fun for the average player. But when I play league games the pockets a 1/4 to 1/2 inch smaller. These make the pockets tighter than most and are good to increase accuracy. They stay put. They do change the angle of the pocket sides so balls will bounce out and not deflect into the pocket. This just makes it tougher which is the point. Another thing that should be obvious but was not is that the spring that sticks up makes shooting out of the corner difficult to impossible. Not a problem for practice time but didn't think about this until I started using them. They do make you sharpen your aim and I do recommend them.
I would recommend this product to a friend.