1、Gear Ratio: 1:18. It is very easy to match with your guitar and has a good decorative effect 2、Smoothly Appearance: High quality materials, durable, give you a perfect experience. Has exquisite and smoothly appearance 3、Scope of Application: Guitar with appropriate size. Two colors match,decorate your guitar 4、Easy to Install: Easy to tighten and loosen, and the appearance is also very delicate 5、Stable and Durable: The string tuning key adopts metal structure, rust proof, anti corrosion, high performance, stable and durable 6 x Guitar Tuning Key 12 x Screw6 x Ferrule   Item Type: Guitar Tuning KeyMaterial: MetalColor: Gold SilverSize: Approx. 20 x 41 x 15.5 x 24.5 x 33.5mm / 0.8 x 1.6 x 0.6 x 1 x 1.3inApprox. 8 x 8.1 x 11.2mm / 0.3 x 0.31 x 0.44inApprox. 11.2 x 6.1mm / 0.44 x 0.24inApprox. 6mm / 0.24inApprox. 21mm-22mm / 0.83in- 0.87inApprox. 27mm-28mm / 1in- 1.1in