Description: Set of 2pcs strap lock button with mounting screws Designed for guitar, mandolin, ukulele Made of high quality material, durable Great guitar and mandolin accessory Material: Metal Color: Black Size Chart: Screw: Approx. 20 x 3mm/ 0.78inch Button inner diameter: Approx. 4.5mm/ 0.17inch Button outer diameter: Approx. 16mm/ 0.62inch Package Includes: 1 Set Strap Buttons with Screws
