【Miwayer Guitar Bridge Pins Size】Length:30mm/1.15inch;Diameter of the head:8mm/0.31";Skirt /collar : 5.35mm/0.2";End of post: 4.55mm/0.175"; Length of post: 22mm/0.85". If the pins are too big, simply sand them down until they fit 【Material】It is made of real imported Panama imported cocoa pineapple wood, with excellent material and stable sound, which effectively enhances the metallic graininess of the guitar. 【Easy to Install】For acoustic guitar, Perfect cutting design, simple installation, Designed for 6 & 12 String acoustic guitar 【Improve Better Tone】Great Guitar Replacement Parts，Great accessory for guitar enthusiasts, ideal replacement for your 6 & 12 strings acoustic guitar, making them a great gift for any guitar player 【Miweyer Brand】 Miwayer is committed to the research and production of musical instrument related products. It is a professional musical instrument manufacturer. If you have any questions, you can contact us in time.