Easy to install: our guitar locking strap buttons are easy to install on your guitar, you just need to put the silicone gaskets on your strap and then slid the lock through the hole of your strap and gaskets, finally attach them on your guitar, no complex steps or tools needed, saving your time and energy.  Large quantity: the package contains 4 pieces of designed guitar strap locks and 10 pieces of black non-slip gaskets, a nice combination with large quantity, convenient for you to replace broken or old locks, without worrying about the lack of material.  Reliable material: our bass strap lock set is mainly made of metal and silicone material, which is not easy to break, they can keep your guitar away from falling off and allow you to interact with your audiences.  Proper size: each guitar strap keeper measures approx. 1.97 x 0.83 inch, they can easily fit the size of most guitar straps, so you don't need to worry about the inappropriate size, just attach them to your guitar with confidence.  Delicate appearance: these guitar strap clip locks are painted black, simple in design and suitable for most instruments like guitar, ukulele, bass and so on, you will feel the locks and buttons fit your instruments well.    Colour: Black  Material: Metal + Silicone  Size: About 48mm    Package Contents:  4 * Guitar Strap Button Lock  10 * Washer    Only the above package content, other products are not included.  Note: Light shooting 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.