This is the fine tuner for the 2710 Killer (2700 Series). The 2720 Spyder had two fine tuner possibilities, either this #8377 used in the early years (before 1988), or the #8477 fine tuner with a larger threaded shaft (after 1988 mostly). So if you have a Spyder, please check to be sure if the threaded shaft you need is this smaller 1/8" shaft or
the larger 3/16" shaft. (These do not fit Floyd Rose tremolos). The Floyd Rose fine tuners are #9255.