Item Type: Open?Gear Guitar Tuners Gears <br>Material: Iron <br>Optional Color: Golden, Black <br>Optional Numbers: 12Pcs, 9Pcs <br>Gear Ratio: 1:18 <br>The gear is in the form of a hex hole. Please pay attention to this problem when purchasing. Thank you for your cooperation. <br>1、The product is very suitable for the replacement of the head gear of the tuning knob of guitar, bass and ukulele instruments. <br>2、The gear ratio is 1:18, with 18 teeth more convenient to use, and the product has high quality and good experience. <br>3、Good?quality basic tuners for guitar and more, easy to install on and also very sturdy. <br>4、The gear is in the form of a hex hole. and it has exquisite workmanship, excellent texture, smooth surface for your use. <br>5、The open?gear guitar tuners has small size, make it more lightweight and portable, and easy to use and carry.The gear is in the form of a hexagonal hole. Please pay attention to this problem when purchasing. Thank you for your cooperation.9 x&nbsp;Open-Gear Guitar Tuners&nbsp;Gears