Specifications ◆ Model Name: UPT ◆ Peg Button: UBB / Black ◆ Color: BK / Black ◆ Included: Bushings and washers required for installation ◆ Head Thickness (Recommended): Can be installed on heads approximately 10-12mm thick "Accurate" tuning made "easy"! GOTOH, a musical instrument parts manufacturer boasting the highest technology in Japan. By applying technology from other instruments, accurate tuning is now possible for ukuleles. High tuning accuracy is necessary for developing accurate pitch and for good playing. It's now a common belief for any instrument that playing won't improve with ambiguous tuning. Ukuleles are always nearby and can be played easily, and their familiarity is also appealing, but accurate intonation has been a weakness until now. These pegs use a "planetary gear mechanism" found in other instruments, a rare feature for ukuleles. They are lightweight, designed specifically for ukuleles with high technology! Including parts, each tuner weighs less than 15g, a dream come true. The design, typical of GOTOH, is simple yet luxurious. You can check the screw hole spacing and dimensions in the photos. #UkulelePegs