These are for use on the Fender Deluxe Telecaster, not for the standard telecaster style bridge. The Deluxe Telecaster has twin unusually big humbuckers and large ‘big head’ Fender headstock. The Deluxe Telecaster bridge is small like a Stratocaster hard tail bridge and contains 6 Stratocaster style ‘block saddles’. The Deluxe Telecaster is a very cool Fender guitar, indeed.These are also used on some Fender Stratocasters, but not on the new style ‘Player Strats’. This set screw is used only on some specific Stratocaster models. Fender has made a few versions of this famous bridge over its very long history.These may be used on a variety of various and specific guitar bridges. These were commonly specified bridge saddles for many manufacturers for many years. Bridge saddle screws are sized for specific hardware applications. Various other Fender bridges are found to use different size saddle screws. Always determine the type of saddle screw that you have before ordering.