Specifications ◆ Model Name: UPTL ◆ Peg Button: UBB / Black ◆ Color: GG / Gold ◆ Included: Bushings and washers required for installation ◆ Head Thickness (Recommended): Approximately 11.5 - 13.5mm "Accurate" intonation, "easy" tuning! GOTOH, a musical instrument parts manufacturer boasting the highest technology in Japan. By applying the technology of other instruments, accurate tuning is now possible for ukuleles. These pegs are the long post model "UPTL" of the ukulele gear tuner "UPT". The difference is the length of the shaft, allowing installation on ukuleles with thicker heads than the UPT. High tuning accuracy is necessary to cultivate an accurate sense of pitch and to play well. It is now a common belief for any instrument that playing will not improve with ambiguous tuning. The ukulele is attractive because it is always close at hand and can be played easily, like a friend, but it has always struggled with accurate intonation. These pegs use a "planetary gear mechanism" found in other instruments, a rare gear peg for ukuleles, and are lightweight for ukuleles with high technology! It's a dream tuner, weighing less than 15g including parts. The design, which is simple yet luxurious, is typical of GOTOH. You can check the screw hole spacing and dimensions in the photos. Type...Ukulele Accessories/Parts...Other