Description:Set of 10 pieces metal guitar strap lock button buckle for guitar parts accessoriesSuitable for most kinds of guitars, bass, ukulele, etcSmooth, rounded & flat head design, non-slipEasy to install and convenient to use, just attach it to your strap, and screw securely into locking positionMaterial: IronSize Chart:10 Pieces Guitar Strap LockPackage Includes:Due to the manual measurement, please allow 1-2mm differences in size