I wanted to fit a vintage six-screw strat bridge and after looking at paper template pdf files on line realized that I would probably muck it up severely left to my own devices. I ordered these templates (front and rear cavity router and screw placement) and was immediately pleased by the weight, solidity and accuracy of the pieces when viewed with my paper templates. These made the drilling of the six mounting screws for the bridge totally painless --and accurate! Without accuracy, the bridge will not operate as intended. Side note: do indeed use a drill press for the best results. I did and all is perfect!!! I highly recommend these templates and this seller.