Take a close look! This is a set of 4 blue rubber strap locks (enough for 2 guitars). *The last photo shows the actual product. ☆It can also be changed to 2 pieces (for 1 guitar) for 300 yen! These locks secure your guitar strap, preventing your guitar from falling. They can be used on electric guitars, electric basses, acoustic guitars, etc. Made of soft silicone rubber, they easily slip over the strap buttons. Despite their softness, they provide a strong hold, and won't loosen or come off after installation. Quantity: 4 Compatible with most strap buttons!