D'Addario Flex Lock Strap Blocks are an easy-to-use strap locking system that quickly and easily attaches to your guitar strap. Simply place the Flex Lock Strap Blocks over the existing strap buttons and you're ready to go.

Made from flexible and durable rubber, they ensure a stable and secure connection. Available in sets of four pieces, in black or red color.

Features:

• Set of 4 pieces
• No modification required on the guitar or strap
• Easily and quickly attaches to any guitar strap for a secure fit