While trying to put a parts-caster together I was attempting to cut down on the cost and not order an original Fender Tremelo. Bad mistake. After installation I found that the tremelo is wider than the original Fender, which offsets both E strings, and the block is around 4 mm deeper than the original. This entailed shaving off the additional materiel in order not to rub against the tremelo cover. Could have saved the extra work by giving out the the extra cash.