Cheap product, not worth the time. I bought this based on the many good reviews but should have paid more attention to the negative reviews. I believe the problem is mainly in the attachment of the body to the bat itself. The part wobbles like hello after I take it apart, I suspect it's because the weight comes off just one set screw. I ended up drilling the holes I needed for free, just using a smaller drill bit. I can try to adapt this device to my needs.