These guitar strap buttons are made of premium metal, durable and sturdy. Adopting electroplating process, with glossy and smooth surface, can be used for a long time. Ingenious design, superb materials and outstanding quality, durable and lightweight, for decades the most popular strap lock system for guitar and bass. Guitar strap blocks work with most strap buttons. No drilling, no screwing, You can replace your strap pegs without any guitar modification and attaches to your strap and snaps securely into locking position. saving your time and energy. Easy to install, convenient to use. Widely Use- These are a modern design which would look great on any your guitar. These quick release guitar strap locks widely used strap lock system for guitars, great for acoustic guitar, classical guitar, electric guitar, bass and all standard straps Durable Material & Safe Design- Our guitar strap locks retainer made from durable metal material ensures years of use without rusting or pitting. Smooth, rounded design won't scratch or damage your strap with sharp edges Colour:black Material:Metal Package Contents: 12 x guitar strap buckles Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.