D'Addario Flex Lock Strap Blocks offer a convenient strap - locking solution for guitar players who don't want to change their existing end pins. Just slide these blocks over your current strap buttons, and you're all set! Crafted from flexible and durable rubber, they ensure a firm connection. These blocks fit most end pins from various manufacturers in the market and come in a red 4 - pack. Inspired by the classic Grolsch bottle cap strap lock design. Key features include: a set of 4 blocks, compatibility with most manufacturer end pins, no need for guitar modifications, and a secure fit when snapped onto any guitar strap.

Using your D'Addario Flex Lock Strap Blocks is easy. First, find your guitar's existing strap buttons. Then, simply slip the Flex Lock Strap Blocks over these buttons. Once in place, your guitar strap will be securely attached. As for the color, the red 4 - pack adds a nice touch. When it comes to maintenance, since they're made of rubber, you can clean them with a mild soap and water solution. Just be gentle while cleaning to avoid any damage. Also, remember that these blocks are designed to fit most manufacturer end pins, but double - check to ensure a proper fit. Avoid using excessive force when attaching or detaching the blocks to prevent any wear and tear.